remove unused imports

hgext/color.py

@@ -100,7 +100,7 @@ disable color.
 
 '''
 
-import os, sys
+import os
 
 from mercurial import commands, dispatch, extensions, ui as uimod, util
 from mercurial.i18n import _

hgext/convert/darcs.py

@@ -7,7 +7,7 @@
 
 from common import NoRepo, checktool, commandline, commit, converter_source
 from mercurial.i18n import _
-from mercurial import encoding, util
+from mercurial import util
 import os, shutil, tempfile, re
 
 # The naming drift of ElementTree is fun!

hgext/graphlog.py

@@ -17,7 +17,7 @@ from mercurial.commands import templateopts
 from mercurial.i18n import _
 from mercurial.node import nullrev
 from mercurial import cmdutil, commands, extensions
-from mercurial import hg, scmutil, util, graphmod
+from mercurial import hg, util, graphmod
 
 ASCIIDATA = 'ASC'
 

hgext/progress.py

@@ -47,7 +47,6 @@ import sys
 import time
 
 from mercurial.i18n import _
-from mercurial import util
 
 def spacejoin(*args):
     return ' '.join(s for s in args if s)