Cleanup: Delete buildbot_globals.py script.
Cleanup: Delete buildbot_globals.py script.

rebaseline_server was the only user of this code but it was removed in
https://chromium.googlesource.com/skia/+/3886046f008f0542de36cbeb35e220404e7c88a9

So there aren't more users of this script and we can remove it now.

BUG=skia:3200
R=borenet@google.com

Review URL: https://codereview.chromium.org/873593005

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