Convert gclient to use subcommand.py

git_cl.py

Index: git_cl.py
diff --git a/git_cl.py b/git_cl.py
index eb6594dc48b89ed1d45343aeb186f1a4d603b0c5..569febb49e11c04bfe33bd4fcb96eb31d445a760 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -2156,13 +2156,6 @@ class OptionParser(optparse.OptionParser):
     logging.basicConfig(level=levels[min(options.verbose, len(levels) - 1)])
     return options, args
 
-  def format_description(self, _):
-    """Disables automatic reformatting."""
-    lines = self.description.rstrip().splitlines()
-    lines_fixed = [lines[0]] + [l[2:] if len(l) >= 2 else l for l in lines[1:]]
-    description = ''.join(l + '\n' for l in lines_fixed)
-    return description[0].upper() + description[1:]
-
 
 def main(argv):
   if sys.hexversion < 0x02060000: