Revert "glInvalidateFramebuffer: iOS (iPad Mini 2, iOS 10.0.1) invalid enum work around"
Revert "glInvalidateFramebuffer: iOS (iPad Mini 2, iOS 10.0.1) invalid enum work around"

emoon/bgfx,LWJGL-CI/bgfx,MikePopoloski/bgfx,mendsley/bgfx,jpcy/bgfx,LWJGL-CI/bgfx,mendsley/bgfx,Synxis/bgfx,jdryg/bgfx,attilaz/bgfx,fluffyfreak/bgfx,MikePopoloski/bgfx,septag/bgfx,jdryg/bgfx,mmicko/bgfx,jdryg/bgfx,bkaradzic/bgfx,mmicko/bgfx,bkaradzic/bgfx,fluffyfreak/bgfx,LWJGL-CI/bgfx,Synxis/bgfx,bkaradzic/bgfx,mendsley/bgfx,septag/bgfx,fluffyfreak/bgfx,septag/bgfx,Synxis/bgfx,attilaz/bgfx,LWJGL-CI/bgfx,jdryg/bgfx,MikePopoloski/bgfx,bkaradzic/bgfx,jpcy/bgfx,mmicko/bgfx,attilaz/bgfx,fluffyfreak/bgfx,jpcy/bgfx,emoon/bgfx,emoon/bgfx,jpcy/bgfx