Remove SK_SUPPORT_LEGACY_CONIC_COMPUTE_QUAD_POW2
Remove SK_SUPPORT_LEGACY_CONIC_COMPUTE_QUAD_POW2

The flag is no longer used in Chromium.

BUG=458898
R=reed@google.com,robertphillips@google.com

Review URL: https://codereview.chromium.org/931663004

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