Cleanup: Remove bug_chomper entry from .gitignore.
Cleanup: Remove bug_chomper entry from .gitignore.

This is not necessary anymore, now that bug_chomper was moved into
skia.googlesource.com/buildbot.git

BUG=None
TBR=borenet@google.com

Review URL: https://codereview.chromium.org/748363002

AOSP-YU/platform_external_skia,MarshedOut/android_external_skia,MonkeyZZZZ/platform_external_skia,pcwalton/skia,geekboxzone/mmallow_external_skia,shahrzadmn/skia,rubenvb/skia,noselhq/skia,TeamExodus/external_skia,vanish87/skia,rubenvb/skia,HalCanary/skia-hc,UBERMALLOW/external_skia,OneRom/external_skia,Hikari-no-Tenshi/android_external_skia,MinimalOS-AOSP/platform_external_skia,noselhq/skia,OneRom/external_skia,MonkeyZZZZ/platform_external_skia,qrealka/skia-hc,w3nd1go/android_external_skia,Igalia/skia,chenlian2015/skia_from_google,timduru/platform-external-skia,invisiblek/android_external_skia,VRToxin-AOSP/android_external_skia,Jichao/skia,BrokenROM/external_skia,HalCanary/skia-hc,noselhq/skia,Infinitive-OS/platform_external_skia,boulzordev/android_external_skia,google/skia,TeamExodus/external_skia,BrokenROM/external_skia,ominux/skia,chenlian2015/skia_from_google,Igalia/skia,AOSP-YU/platform_external_skia,PAC-ROM/android_external_skia,MinimalOS-AOSP/platform_external_skia,AOSP-YU/platform_external_skia,pcwalton/skia,TeamTwisted/external_skia,YUPlayGodDev/platform_external_skia,YUPlayGodDev/platform_external_skia,DiamondLovesYou/skia-sys,AOSPB/external_skia,w3nd1go/android_external_skia,pcwalton/skia,AOSPB/external_skia,Hikari-no-Tenshi/android_external_skia,ominux/skia,nvoron23/skia,amyvmiwei/skia,nfxosp/platform_external_skia,AOSPB/external_skia,samuelig/skia,w3nd1go/android_external_skia,Infinitive-OS/platform_external_skia,jtg-gg/skia,shahrzadmn/skia,Hikari-no-Tenshi/android_external_skia,TeamExodus/external_skia,TeamTwisted/external_skia,MinimalOS-AOSP/platform_external_skia,rubenvb/skia,MonkeyZZZZ/platform_external_skia,timduru/platform-external-skia,OneRom/external_skia,Jichao/skia,geekboxzone/mmallow_external_skia,shahrzadmn/skia,noselhq/skia,nfxosp/platform_external_skia,tmpvar/skia.cc,Hikari-no-Tenshi/android_external_skia,MinimalOS-AOSP/platform_external_skia,spezi77/android_external_skia,PAC-ROM/android_external_skia,Jichao/skia,jtg-gg/skia,vanish87/skia,invisiblek/android_external_skia,rubenvb/skia,scroggo/skia,BrokenROM/external_skia,AOSPB/external_skia,ominux/skia,PAC-ROM/android_external_skia,Igalia/skia,AOSPB/external_skia,Jichao/skia,shahrzadmn/skia,nvoron23/skia,jtg-gg/skia,MinimalOS-AOSP/platform_external_skia,tmpvar/skia.cc,UBERMALLOW/external_skia,MonkeyZZZZ/platform_external_skia,todotodoo/skia,jtg-gg/skia,invisiblek/android_external_skia,nfxosp/platform_external_skia,chenlian2015/skia_from_google,geekboxzone/mmallow_external_skia,HalCanary/skia-hc,qrealka/skia-hc,PAC-ROM/android_external_skia,shahrzadmn/skia,invisiblek/android_external_skia,UBERMALLOW/external_skia,MonkeyZZZZ/platform_external_skia,nfxosp/platform_external_skia,timduru/platform-external-skia,boulzordev/android_external_skia,MinimalOS-AOSP/platform_external_skia,scroggo/skia,google/skia,TeamExodus/external_skia,scroggo/skia,tmpvar/skia.cc,YUPlayGodDev/platform_external_skia,rubenvb/skia,amyvmiwei/skia,boulzordev/android_external_skia,rubenvb/skia,aosp-mirror/platform_external_skia,tmpvar/skia.cc,MonkeyZZZZ/platform_external_skia,PAC-ROM/android_external_skia,UBERMALLOW/external_skia,BrokenROM/external_skia,scroggo/skia,nfxosp/platform_external_skia,PAC-ROM/android_external_skia,ominux/skia,Igalia/skia,VRToxin-AOSP/android_external_skia,spezi77/android_external_skia,TeamExodus/external_skia,nvoron23/skia,nfxosp/platform_external_skia,samuelig/skia,UBERMALLOW/external_skia,geekboxzone/mmallow_external_skia,timduru/platform-external-skia,pcwalton/skia,chenlian2015/skia_from_google,UBERMALLOW/external_skia,Infinitive-OS/platform_external_skia,spezi77/android_external_skia,samuelig/skia,boulzordev/android_external_skia,shahrzadmn/skia,TeamTwisted/external_skia,Igalia/skia,google/skia,rubenvb/skia,vanish87/skia,invisiblek/android_external_skia,geekboxzone/mmallow_external_skia,BrokenROM/external_skia,HalCanary/skia-hc,MarshedOut/android_external_skia,UBERMALLOW/external_skia,todotodoo/skia,todotodoo/skia,TeamExodus/external_skia,AOSP-YU/platform_external_skia,MarshedOut/android_external_skia,PAC-ROM/android_external_skia,ominux/skia,TeamExodus/external_skia,OneRom/external_skia,geekboxzone/mmallow_external_skia,nfxosp/platform_external_skia,spezi77/android_external_skia,ominux/skia,Jichao/skia,DiamondLovesYou/skia-sys,vanish87/skia,shahrzadmn/skia,HalCanary/skia-hc,vanish87/skia,scroggo/skia,boulzordev/android_external_skia,timduru/platform-external-skia,todotodoo/skia,MarshedOut/android_external_skia,VRToxin-AOSP/android_external_skia,Jichao/skia,shahrzadmn/skia,MonkeyZZZZ/platform_external_skia,VRToxin-AOSP/android_external_skia,HalCanary/skia-hc,YUPlayGodDev/platform_external_skia,boulzordev/android_external_skia,VRToxin-AOSP/android_external_skia,pcwalton/skia,VRToxin-AOSP/android_external_skia,aosp-mirror/platform_external_skia,TeamTwisted/external_skia,todotodoo/skia,google/skia,AOSP-YU/platform_external_skia,amyvmiwei/skia,nfxosp/platform_external_skia,MarshedOut/android_external_skia,VRToxin-AOSP/android_external_skia,vanish87/skia,spezi77/android_external_skia,google/skia,Hikari-no-Tenshi/android_external_skia,aosp-mirror/platform_external_skia,VRToxin-AOSP/android_external_skia,HalCanary/skia-hc,TeamTwisted/external_skia,noselhq/skia,vanish87/skia,w3nd1go/android_external_skia,w3nd1go/android_external_skia,Jichao/skia,samuelig/skia,nvoron23/skia,TeamExodus/external_skia,noselhq/skia,BrokenROM/external_skia,geekboxzone/mmallow_external_skia,google/skia,nvoron23/skia,BrokenROM/external_skia,DiamondLovesYou/skia-sys,AOSP-YU/platform_external_skia,google/skia,chenlian2015/skia_from_google,geekboxzone/mmallow_external_skia,timduru/platform-external-skia,Hikari-no-Tenshi/android_external_skia,MarshedOut/android_external_skia,ominux/skia,amyvmiwei/skia,YUPlayGodDev/platform_external_skia,YUPlayGodDev/platform_external_skia,pcwalton/skia,VRToxin-AOSP/android_external_skia,tmpvar/skia.cc,chenlian2015/skia_from_google,w3nd1go/android_external_skia,vanish87/skia,scroggo/skia,google/skia,YUPlayGodDev/platform_external_skia,MinimalOS-AOSP/platform_external_skia,MonkeyZZZZ/platform_external_skia,todotodoo/skia,samuelig/skia,w3nd1go/android_external_skia,aosp-mirror/platform_external_skia,OneRom/external_skia,Infinitive-OS/platform_external_skia,amyvmiwei/skia,qrealka/skia-hc,noselhq/skia,OneRom/external_skia,nvoron23/skia,Jichao/skia,jtg-gg/skia,qrealka/skia-hc,google/skia,nvoron23/skia,Hikari-no-Tenshi/android_external_skia,DiamondLovesYou/skia-sys,pcwalton/skia,TeamTwisted/external_skia,YUPlayGodDev/platform_external_skia,PAC-ROM/android_external_skia,Jichao/skia,nvoron23/skia,AOSPB/external_skia,DiamondLovesYou/skia-sys,HalCanary/skia-hc,jtg-gg/skia,Infinitive-OS/platform_external_skia,HalCanary/skia-hc,invisiblek/android_external_skia,DiamondLovesYou/skia-sys,amyvmiwei/skia,AOSP-YU/platform_external_skia,pcwalton/skia,Infinitive-OS/platform_external_skia,todotodoo/skia,nfxosp/platform_external_skia,qrealka/skia-hc,TeamExodus/external_skia,amyvmiwei/skia,UBERMALLOW/external_skia,invisiblek/android_external_skia,geekboxzone/mmallow_external_skia,aosp-mirror/platform_external_skia,qrealka/skia-hc,spezi77/android_external_skia,Infinitive-OS/platform_external_skia,noselhq/skia,PAC-ROM/android_external_skia,w3nd1go/android_external_skia,chenlian2015/skia_from_google,BrokenROM/external_skia,amyvmiwei/skia,samuelig/skia,ominux/skia,DiamondLovesYou/skia-sys,AOSPB/external_skia,tmpvar/skia.cc,MarshedOut/android_external_skia,AOSPB/external_skia,Hikari-no-Tenshi/android_external_skia,Igalia/skia,Infinitive-OS/platform_external_skia,noselhq/skia,qrealka/skia-hc,vanish87/skia,HalCanary/skia-hc,MarshedOut/android_external_skia,tmpvar/skia.cc,nvoron23/skia,aosp-mirror/platform_external_skia,YUPlayGodDev/platform_external_skia,MarshedOut/android_external_skia,w3nd1go/android_external_skia,AOSP-YU/platform_external_skia,Igalia/skia,MinimalOS-AOSP/platform_external_skia,shahrzadmn/skia,todotodoo/skia,rubenvb/skia,rubenvb/skia,pcwalton/skia,AOSP-YU/platform_external_skia,jtg-gg/skia,timduru/platform-external-skia,boulzordev/android_external_skia,Igalia/skia,aosp-mirror/platform_external_skia,ominux/skia,OneRom/external_skia,OneRom/external_skia,samuelig/skia,boulzordev/android_external_skia,scroggo/skia,OneRom/external_skia,AOSPB/external_skia,TeamTwisted/external_skia,aosp-mirror/platform_external_skia,Infinitive-OS/platform_external_skia,aosp-mirror/platform_external_skia,tmpvar/skia.cc,samuelig/skia,TeamTwisted/external_skia,qrealka/skia-hc,UBERMALLOW/external_skia,invisiblek/android_external_skia,todotodoo/skia,boulzordev/android_external_skia,MonkeyZZZZ/platform_external_skia,rubenvb/skia,scroggo/skia,TeamTwisted/external_skia,aosp-mirror/platform_external_skia,tmpvar/skia.cc,MinimalOS-AOSP/platform_external_skia,google/skia