Remove unused pylint suppressions

pylint is not used since bb5b1a0. The pyflakes cleanup mentioned in that
commit has not been done, but given that this project is no longer being
actively developed I don't think it's worth spending time doing it.

Leaving the pylint suppressions causes confusion because it leads people
to think that we are still using pylint.

Change-Id: If7d9f280a0f408c780f15915ffdb80579ae21f69
diff --git a/main.py b/main.py
index a6538c2..be5e313 100755
--- a/main.py
+++ b/main.py
@@ -61,9 +61,7 @@
 from subcmds import all_commands
 
 if not is_python3():
-  # pylint:disable=W0622
   input = raw_input
-  # pylint:enable=W0622
 
 global_options = optparse.OptionParser(
                  usage="repo [-p|--paginate|--no-pager] COMMAND [ARGS]"
@@ -396,7 +394,7 @@
     self.context = None
     self.handler_order = urllib.request.BaseHandler.handler_order - 50
 
-  def http_error_401(self, req, fp, code, msg, headers): # pylint:disable=unused-argument
+  def http_error_401(self, req, fp, code, msg, headers):
     host = req.get_host()
     retry = self.http_error_auth_reqed('www-authenticate', host, req, headers)
     return retry