superproject: added 'implies -c' in the help of --use-superproject option.

sync.py: deleted unused import errno.

Tested:
$ ./run_tests
$ flake8 repo subcmds/sync.py

Bug: https://crbug.com/gerrit/15208
Change-Id: I2bb3098f5602ded3861e000100766041ad93b53d
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/322555
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: Raman Tenneti <rtenneti@google.com>

2 files changed, 2 insertions, 3 deletions

diff --git a/repo b/repo
index 4cddbf1e..2af77ace 100755
--- a/repo
+++ b/repo
@@ -372,7 +372,7 @@ def InitParser(parser, gitc_init=False):
                    help='filter for use with --partial-clone '
                         '[default: %default]')
   group.add_option('--use-superproject', action='store_true', default=None,
-                   help='use the manifest superproject to sync projects')
+                   help='use the manifest superproject to sync projects; implies -c')
   group.add_option('--no-use-superproject', action='store_false',
                    dest='use_superproject',
                    help='disable use of manifest superprojects')
diff --git a/subcmds/sync.py b/subcmds/sync.py
index 01704095..c2303232 100644
--- a/subcmds/sync.py
+++ b/subcmds/sync.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import errno
 import functools
 import http.cookiejar as cookielib
 import io
@@ -235,7 +234,7 @@ later is required to fix a server side protocol bug.
                  dest='fetch_submodules', action='store_true',
                  help='fetch submodules from server')
     p.add_option('--use-superproject', action='store_true',
-                 help='use the manifest superproject to sync projects')
+                 help='use the manifest superproject to sync projects; implies -c')
     p.add_option('--no-use-superproject', action='store_false',
                  dest='use_superproject',
                  help='disable use of manifest superprojects')