GUACAMOLE-1054: Fixed some minor translation issues like removal of empty and not-really-translated strings.

extensions/guacamole-auth-totp/src/main/resources/translations/ru.json

@@ -4,10 +4,6 @@
         "NAME" : "Бэкенд TOTP TFA"
     },
 
-    "LOGIN" : {
-        "FIELD_HEADER_GUAC_TOTP" : ""
-    },
-
     "TOTP" : {
 
         "ACTION_HIDE_DETAILS" : "Спрятать",