Removed translation for unneeded link expiry

i18n/en.json

@@ -455,10 +455,6 @@
     "id": "api.file.get_file.not_found.app_error",
     "translation": "Could not find file."
   },
-  {
-    "id": "api.file.get_file.public_expired.app_error",
-    "translation": "The public link has expired"
-  },
   {
     "id": "api.file.get_file.public_invalid.app_error",
     "translation": "The public link does not appear to be valid"

i18n/es.json

@@ -455,10 +455,6 @@
     "id": "api.file.get_file.not_found.app_error",
     "translation": "No se encontró el archivo."
   },
-  {
-    "id": "api.file.get_file.public_expired.app_error",
-    "translation": "El enlace público ha expirado"
-  },
   {
     "id": "api.file.get_file.public_invalid.app_error",
     "translation": "El enlace público parece ser inválido"