Program: Small cleanup to linkAttributes.

The comment here was incorrect, and the signature passed some
redundant arguments.

Noticed this when I was looking at the code for Vulkan/glslang.

BUG=angleproject:1576

Change-Id: Ie9e7eb7cbe4b65503901b2550e95cd818b7c28c0
Reviewed-on: https://chromium-review.googlesource.com/412324
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
diff --git a/src/libANGLE/Program.h b/src/libANGLE/Program.h
index 18bec49..187628d 100644
--- a/src/libANGLE/Program.h
+++ b/src/libANGLE/Program.h
@@ -379,10 +379,7 @@
     void unlink(bool destroy = false);
     void resetUniformBlockBindings();
 
-    bool linkAttributes(const ContextState &data,
-                        InfoLog &infoLog,
-                        const Bindings &attributeBindings,
-                        const Shader *vertexShader);
+    bool linkAttributes(const ContextState &data, InfoLog &infoLog);
     bool validateUniformBlocksCount(GLuint maxUniformBlocks,
                                     const std::vector<sh::InterfaceBlock> &block,
                                     const std::string &errorMessage,