Merge pull request moby#32685 from albers/completion-cleanup-1

Remove bogus statement from bash completion

Author: mlaventure

contrib/completion/bash/docker

@@ -3018,8 +3018,6 @@ _docker_service_update() {
 # _docker_service_update_and_create is the combined completion for `docker service create`
 # and `docker service update`
 _docker_service_update_and_create() {
-	local $subcommand="${words[$subcommand_pos]}"
-
 	local options_with_args="
 		--endpoint-mode
 		--env -e