disable annoying warning

Index: pythran/log.py
--- pythran/log.py.orig
+++ pythran/log.py
@@ -26,7 +26,3 @@ else:
 
 stream.setFormatter(formatter)
 logger.addHandler(stream)
-
-if color_disabled:
-    logger.info("Disabling color, you really want to install colorlog.")
-
