Removed stale comment.

src/wgl_context.c

@@ -33,10 +33,6 @@
 
 
 // Initialize WGL-specific extensions
-// This function is called once before initial context creation, i.e. before
-// any WGL extensions could be present.  This is done in order to have both
-// extension variable clearing and loading in the same place, hopefully
-// decreasing the possibility of forgetting to add one without the other.
 //
 static void initWGLExtensions(_GLFWwindow* window)
 {