Disable the GL_NV_framebuffer_blit extension

This extension is believed to be unused.

Bug: b/147536183
Change-Id: Ifaa1e560414e93f2d1382d7d83c335dda9370eee
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/40110
Tested-by: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
diff --git a/src/OpenGL/libGLESv2/Context.cpp b/src/OpenGL/libGLESv2/Context.cpp
index 397a2f0..3fe4246 100644
--- a/src/OpenGL/libGLESv2/Context.cpp
+++ b/src/OpenGL/libGLESv2/Context.cpp
@@ -4600,7 +4600,7 @@
 		"GL_CHROMIUM_texture_filtering_hint",
 		"GL_NV_depth_buffer_float2",
 		"GL_NV_fence",
-		"GL_NV_framebuffer_blit",
+	//	"GL_NV_framebuffer_blit",  // b/147536183
 		"GL_NV_read_depth",
 		"GL_NV_read_depth_stencil",
 		"GL_NV_read_stencil",