Remove entrypoint, it's done already

sbin/dokku-entrypoint.sh

@@ -2,39 +2,4 @@
 
 set -eu -o pipefail
 
-add_user() {
-  set -eu
-
-  keycloak_add_user_script="/opt/jboss/keycloak/bin/add-user-keycloak.sh"
-
-  if $keycloak_add_user_script -r master -u "$KEYCLOAK_USER" -p "$KEYCLOAK_PASSWORD"; then
-    echo "=====> root user added"
-  else
-    echo "=====> Failed to add root user"
-    exit 1
-  fi
-}
-
-setup_root_user() {
-  set -eu
-
-  keycloak_add_user_json="/opt/jboss/keycloak/standalone/configuration/keycloak-add-user.json"
-
-  if [ ! -f "$keycloak_add_user_json" ]; then
-    add_user
-  else
-    if ! grep -q "$KEYCLOAK_USER" "$keycloak_add_user_json"; then
-      add_user
-    fi
-  fi
-}
-
-main() {
-  set -eu
-
-  setup_root_user
-}
-
-main
-
 /opt/jboss/tools/docker-entrypoint.sh "$@"