PreferencesStore: Remove not required method setTable()

library/Icinga/User/Preferences/PreferencesStore.php

@@ -132,16 +132,6 @@ class PreferencesStore
         return $this->user;
     }
 
-    /**
-     * Set the table to use
-     *
-     * @param   string  $table  The table name
-     */
-    public function setTable(string $table)
-    {
-        $this->table = $table;
-    }
-
     /**
      * Initialize the store
      */