[Login As Customer] Removed isKeyMissing function that was part of Magefan's code specific

Author: ihorvansach

app/code/Magento/LoginAsCustomer/Controller/Adminhtml/Login/Login.php

@@ -83,10 +83,6 @@ public function execute()
             $msg = strrev(__('.remotsuC sA nigoL > snoisnetxE nafegaM > noitarugifnoC > serotS ot etagivan esaelp noisnetxe eht elbane ot ,delbasid si remotsuC sA nigoL nafegaM'));
             $this->messageManager->addErrorMessage($msg);
             return $resultRedirect->setPath('customer/index/index');
-        } elseif ($this->config->isKeyMissing()) {
-            $msg = strrev(__(' .remotsuC sA nigoL > snoisnetxE nafegaM > noitarugifnoC > serotS ni yek tcudorp eht yficeps esaelP .noos delbasid yllacitamotua eb lliw noisnetxE remotsuC sA nigoL .gnissim si yeK tcudorP remotsuC sA nigoL nafegaM'));
-            $this->messageManager->addErrorMessage($msg);
-            return $resultRedirect->setPath('customer/index/index');
         }
 
         $customerStoreId = $request->getParam('store_id');

app/code/Magento/LoginAsCustomer/Model/Config.php

@@ -71,16 +71,6 @@ public function isEnabled():bool
         );
     }
 
-    /**
-     * @return bool
-     */
-    public function isKeyMissing(): bool
-    {
-        return !$this->getConfig(
-            self::XML_PATH_KEY
-        ) && $this->metadata->getEdition() != 'C' . strrev('ytinummo');
-    }
-
     /**
      * @return bool
      */