More fixes to comments

theano/gof/cc.py

@@ -1379,10 +1379,6 @@ class CLinker(link.Linker):
         if c_compiler:
             sig.append('c_compiler_str=' + c_compiler.version_str())
 
-		# NOTE: config md5 is not using md5 hash, but sha256 instead. Function
-		# names and string instances of md5 will be updated at a later release. 
-		# See PR#5916 for details.
-		
         # IMPORTANT: The 'md5' prefix is used to isolate the compilation
         # parameters from the rest of the key. If you want to add more key
         # elements, they should be before this md5 hash if and only if they