Fix warning ('when' is exhaustive so 'else' is redundant here)

libraries/mediaupload/api/src/main/kotlin/io/element/android/libraries/mediaupload/api/MediaSender.kt

@@ -82,7 +82,6 @@ class MediaSender @Inject constructor(
                     progressCallback = progressCallback
                 )
             }
-            else -> Result.failure(IllegalStateException("Unexpected MediaUploadInfo format: $uploadInfo"))
         }
     }
 }