Clean up Eloquent definitions

src/Group/Group.php

@@ -33,11 +33,6 @@ class Group extends AbstractModel
     use EventGeneratorTrait;
     use ScopeVisibilityTrait;
 
-    /**
-     * {@inheritdoc}
-     */
-    protected $table = 'groups';
-
     /**
      * The ID of the administrator group.
      */

src/Group/Permission.php

@@ -32,7 +32,7 @@ class Permission extends AbstractModel
      */
     public function group()
     {
-        return $this->belongsTo(Group::class, 'group_id');
+        return $this->belongsTo(Group::class);
     }
 
     /**