avoid useless spam on stdio

Index: quodlibet/packages/raven/utils/__init__.py
--- quodlibet/packages/raven/utils/__init__.py.orig
+++ quodlibet/packages/raven/utils/__init__.py
@@ -11,10 +11,7 @@ from raven.utils.compat import iteritems, string_types
 import logging
 import threading
 from functools import update_wrapper
-try:
-    import pkg_resources
-except ImportError:
-    pkg_resources = None  # NOQA
+pkg_resources = None  # NOQA
 import sys
 
 logger = logging.getLogger('raven.errors')
