Don't print version before help summary (bare `rbenv` already does this)

libexec/rbenv-help

@@ -124,7 +124,6 @@ if [ "$1" = "--usage" ]; then
 fi
 
 if [ -z "$1" ] || [ "$1" == "rbenv" ]; then
-  [ -n "$usage" ] || rbenv---version
   echo "Usage: rbenv <command> [<args>]"
   [ -z "$usage" ] || exit
   echo