Fix GN build

cf. https://swiftshader-review.googlesource.com/c/SwiftShader/+/43388

Bug: build fix
Change-Id: I8d2acc0bbb19fa71748aafeebd6c0d500673ed93
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/43408
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/Device/BUILD.gn b/src/Device/BUILD.gn
index f2c2d24..92e3d0d 100644
--- a/src/Device/BUILD.gn
+++ b/src/Device/BUILD.gn
@@ -20,7 +20,6 @@
     "BC_Decoder.hpp",
     "Blitter.hpp",
     "Clipper.hpp",
-    "Color.hpp",
     "Config.hpp",
     "Context.hpp",
     "ETC_Decoder.hpp",