Only say that we're migrating an extension if it has migrations

src/Database/Console/MigrateCommand.php

@@ -68,10 +68,12 @@ class MigrateCommand extends AbstractCommand
         $extensions->getMigrator()->setOutput($this->output);
 
         foreach ($extensions->getEnabledExtensions() as $name => $extension) {
+            if ($extension->hasMigrations()) {
                 $this->info('Migrating extension: '.$name);
 
                 $extensions->migrate($extension);
             }
+        }
 
         $this->container->make('Flarum\Settings\SettingsRepositoryInterface')->set('version', $this->container->version());