Clean up all references to branchauthor after removal of usage

Since it's no longer used in Ib83981a4952e1d6d68ebb8add11aabefbf3b2a4b.

This approximately reverts Ieed465f69ed0c0864979a92f609bd8f58cd8e883.

Change-Id: I4ded027a4f9b6fa53207f3df14d5b8828bfc4a65

git_review/cmd.py

@@ -54,7 +54,7 @@ GLOBAL_CONFIG = "/etc/git-review/git-review.conf"
 USER_CONFIG = os.path.join(CONFIGDIR, "git-review.conf")
 DEFAULTS = dict(scheme='ssh', hostname=False, port=None, project=False,
                 branch='master', remote="gerrit", rebase="1",
-                track="0", usepushurl="0", notopic=True, branchauthor="name")
+                track="0", usepushurl="0", notopic=True)
 LOCAL_GIT_VERSION = (0, 0, 0)
 COPYRIGHT = """\
 Copyright OpenStack Foundation and OpenDev Contributors
@@ -85,7 +85,6 @@ _use_color = None
 _orig_head = None
 _rewrites = None
 _rewrites_push = None
-BRANCHAUTHOR = None
 
 
 class colors(object):
@@ -828,7 +827,6 @@ def load_config_file(config_file):
         'track': 'track',
         'notopic': 'notopic',
         'usepushurl': 'usepushurl',
-        'branchauthor': 'branchauthor',
     }
     config = {}
     for config_key, option_name in options.items():
@@ -1549,19 +1547,7 @@ git-review is a tool that helps submitting git branches to gerrit for
 review.
 """
 
-    epilog = """\
-additional information:
-
-  Options configurable using: git config --global gitreview.OPTION VALUE
-
-  branchauthor          name (default), username, email
-"""
-
-    parser = argparse.ArgumentParser(
-        usage=usage,
-        description=description,
-        formatter_class=argparse.RawDescriptionHelpFormatter,
-        epilog=epilog)
+    parser = argparse.ArgumentParser(usage=usage, description=description)
 
     topic_arg_group = parser.add_mutually_exclusive_group()
     topic_arg_group.add_argument("-t", "--topic", dest="topic",
@@ -1776,13 +1762,6 @@ additional information:
     yes = options.yes
     status = 0
 
-    global BRANCHAUTHOR
-    BRANCHAUTHOR = config['branchauthor']
-    if BRANCHAUTHOR not in ["name", "email", "username"]:
-        warn("Invalid gitreview.branchauthor: %s (using default: %s)"
-             % (BRANCHAUTHOR, DEFAULTS["branchauthor"]))
-        BRANCHAUTHOR = DEFAULTS["branchauthor"]
-
     if options.track:
         remote, branch = resolve_tracking(remote, branch)