Remove beta warning and obsolete flag conversion for Cloud Run jobs

Cloud Run jobs support was added in v2.4.0 with a beta warning.
The `--update-secrets` flag is now supported for `gcloud run jobs deploy`,
so the flag conversion logic is no longer needed.

Fixes #593

Author: 178inaba

dist/main/index.js

@@ -168,11 +168,6 @@ export async function run(): Promise<void> {
         throw new Error(`Unkown metadata type "${kind}", expected "Job" or "Service"`);
       }
     } else if (job) {
-      logWarning(
-        `Support for Cloud Run jobs in this GitHub Action is in beta and is ` +
-          `not covered by the semver backwards compatibility guarantee.`,
-      );
-
       deployCmd = ['run', 'jobs', 'deploy', job];
 
       if (image) {
@@ -189,17 +184,6 @@ export async function run(): Promise<void> {
         deployCmd.push('--wait');
       }
 
-      // There is no --update-secrets flag on jobs, but there will be in the
-      // future. At that point, we can remove this.
-      const idx = deployCmd.indexOf('--update-secrets');
-      if (idx >= 0) {
-        logWarning(
-          `Cloud Run does not allow updating secrets on jobs, ignoring ` +
-            `"secrets_update_strategy" value of "merge"`,
-        );
-        deployCmd[idx] = '--set-secrets';
-      }
-
       // Compile the labels
       const defLabels = skipDefaultLabels ? {} : defaultLabels();
       const compiledLabels = Object.assign({}, defLabels, labels);