chore: drop the activity command cleanup migration

Old plain-text commands are removed by the daily 60-day activity_log cleanup.

database/migrations/2026_09_28_093936_remove_stored_commands_from_finished_activities.php

@@ -1,41 +0,0 @@
-<?php
-
-use App\Enums\ProcessStatus;
-use App\Support\RemoteProcessCommand;
-use Illuminate\Database\Migrations\Migration;
-use Spatie\Activitylog\Models\Activity;
-
-return new class extends Migration
-{
-    /**
-     * Remove the stored command from remote process activities that no longer run.
-     *
-     * Before this release the command was stored as plain text and kept for 60 days. It can
-     * contain secrets such as database passwords, S3 keys and tunnel tokens. Queued or running
-     * tasks keep their command, because the queue worker still reads it; the task removes it
-     * itself when it ends. Queued or running rows older than one day are stuck and are cleaned too.
-     */
-    public function up(): void
-    {
-        Activity::query()
-            ->whereNotNull('properties->'.RemoteProcessCommand::PROPERTY)
-            ->where(fn ($query) => $query
-                ->whereNotIn('properties->status', [ProcessStatus::QUEUED->value, ProcessStatus::IN_PROGRESS->value])
-                ->orWhereNull('properties->status')
-                ->orWhere('updated_at', '<', now()->subDay()))
-            ->chunkById(500, function ($activities) {
-                foreach ($activities as $activity) {
-                    $activity->properties = $activity->properties->except([
-                        RemoteProcessCommand::PROPERTY,
-                        RemoteProcessCommand::ENCRYPTED_PROPERTY,
-                    ]);
-                    $activity->saveQuietly();
-                }
-            });
-    }
-
-    public function down(): void
-    {
-        // The removed commands cannot be restored.
-    }
-};