Delete old webhook action, not used anymore

app/TwitchWebhook.php

@@ -28,13 +28,6 @@ class TwitchWebhook extends Model
         return $this->belongsTo("App\User");
     }
 
-    /**
-     * Get webhook action
-     */
-    public function webhookActions() {
-        return $this->hasMany("App\WebhookAction", "webhook_id");
-    }
-
     // event handlers
 
     /**