chore: remove unused translations

Author: hywax

Diff for: locales/en-US.json

@@ -4,12 +4,6 @@
       "title": "Services not found",
       "description": "Oops! You did not specify a list of services in config.yaml",
       "action": "Go to documentation"
-    },
-
-    "ping": {
-      "description": "Server responded in",
-      "units": "ms",
-      "error": "Server not responding"
     }
   },
 

Diff for: locales/ru-RU.json

@@ -4,12 +4,6 @@
       "title": "Сервисы не найдены",
       "description": "Упс! Вы не указали список сервисов в файле config.yaml",
       "action": "Перейти к документации"
-    },
-
-    "ping": {
-      "description": "Время ответа сервера",
-      "units": "мс",
-      "error": "Сервер не отвечает"
     }
   },