Remove unnecessary 'pass' lines

lib/debian/arfile.py

@@ -48,7 +48,6 @@ FILE_MAGIC = b"`\n"
 
 class ArError(Exception):
     """ Common base for all exceptions raised within the arfile module """
-    pass
 
 
 class ArFile(object):

lib/debian/deb822.py

@@ -1108,7 +1108,6 @@ class GpgInfo(dict):
 # XXX handle utf-8 %-encoding
     def uid(self):
         """Return the primary ID of the signee key, None is not available"""
-        pass
 
     @classmethod
     def from_output(cls, out, err=None):