Revert "Finish NV12 support via streams."

Broke Windows Clang compilation, see https://build.chromium.org/p/chromium.gpu.fyi/builders/GPU%20Win%20Clang%20Builder%20%28dbg%29/builds/3583/steps/compile/logs/stdio and search for TextureStorage11.h

This reverts commit 9b8b359fa3615be7c7492239a48f61103b2e4fcc.

Change-Id: I6e54305eba02b40927a35577594df39e951adb32
Reviewed-on: https://chromium-review.googlesource.com/341430
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/compiler/translator/Initialize.cpp b/src/compiler/translator/Initialize.cpp
index ff35d20..410d6df 100644
--- a/src/compiler/translator/Initialize.cpp
+++ b/src/compiler/translator/Initialize.cpp
@@ -233,7 +233,7 @@
     symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "texture2DProj", sampler2D, float4);
     symbolTable.insertBuiltIn(ESSL1_BUILTINS, float4, "textureCube", samplerCube, float3);
 
-    if (resources.OES_EGL_image_external || resources.NV_EGL_stream_consumer_external)
+    if (resources.OES_EGL_image_external)
     {
         const TType *samplerExternalOES = TCache::getType(EbtSamplerExternalOES);
 
@@ -594,8 +594,6 @@
         extBehavior["GL_OES_standard_derivatives"] = EBhUndefined;
     if (resources.OES_EGL_image_external)
         extBehavior["GL_OES_EGL_image_external"] = EBhUndefined;
-    if (resources.NV_EGL_stream_consumer_external)
-        extBehavior["GL_NV_EGL_stream_consumer_external"] = EBhUndefined;
     if (resources.ARB_texture_rectangle)
         extBehavior["GL_ARB_texture_rectangle"] = EBhUndefined;
     if (resources.EXT_blend_func_extended)