fix: drop now unnecessary rm call in config

This was used to delete an errant '*' service that was accidentally created during service deletion. That was fixed in dokku/dokku-redis#126 - and the respective PRs for each service - and is thus no longer necessary.

The fix was done by utilizing pushd when iterating over folders instead of trying to get a subdirectory with a partially quoted path.

Closes dokku/dokku-redis#130

config

@@ -24,7 +24,3 @@ export PLUGIN_BASE_PATH="$PLUGIN_PATH"
 if [[ -n $DOKKU_API_VERSION ]]; then
   export PLUGIN_BASE_PATH="$PLUGIN_ENABLED_PATH"
 fi
-
-if [[ -d "$PLUGIN_DATA_ROOT/*" ]]; then
-  rm -rf "${PLUGIN_DATA_ROOT:?}/*"
-fi