Further simplification

plugin.sh

@@ -1,31 +1,7 @@
 #!/bin/bash
 
-set -ex
+set -e
 
-PLUGIN_COMMAND=${PLUGIN_COMMAND:?command is not set}
-
-ABRA=/root/.local/bin/abra
-
-output_versions(){
-  echo "--- start versions"
-  $ABRA -v
-  echo "--- end versions"
-}
-
-run_abra_cmd() {
-  echo "--- start command ---"
-
-  # shellcheck disable=SC2086
-  $ABRA $PLUGIN_COMMAND
-
-  echo "--- end command ---"
-}
-
-run_plugin() {
-  echo "--- start drone-abra ---"
-  output_versions
-  run_abra_cmd
-  echo "--- end drone-abra ---"
-}
-
-run_plugin
+# shellcheck disable=SC2016
+echo 'This plugin requires setting `commands` in your `.drone.yml`. Goodbye!'
+exit 1