remove rosdep update

Signed-off-by: Yutaka Kondo <yutaka.kondo@youtalk.jp>

docker/scripts/resolve_rosdep_keys.sh

@@ -4,7 +4,7 @@ function resolve_rosdep_keys() {
     local src_path=$1
     local ros_distro=$2
 
-    rosdep update && rosdep keys --ignore-src --from-paths "$src_path" |
+    rosdep keys --ignore-src --from-paths "$src_path" |
         xargs rosdep resolve --rosdistro "$ros_distro" |
         grep -v '^#' |
         sed 's/ \+/\n/g' |