refactor(__load_completion): remove redundant local ret

Author: scop

bash_completion

@@ -2973,7 +2973,6 @@ __load_completion()
     # the real path to the command, and $PATH
     paths=()
     [[ $cmd == /* ]] && paths+=("${cmd%/*}")
-    local ret
     _comp_realcommand "$cmd" && paths+=("${ret%/*}")
     _comp_split -aF : paths "$PATH"
     for dir in "${paths[@]%/}"; do