Remove wrong comments from English language file

Translations to English on translatewiki are disabled.

lang/strings_english.txt

@@ -18,13 +18,6 @@
  * Language File - English (English)
  *
  * **********************************************************************
- * ** This file is generated from translations stored in translatewiki **
- * ** Information on Copyright/License for translatewiki translations  **
- * ** is available at http://translatewiki.net/wiki/Project:About      **
- * **********************************************************************
- * **                                                                  **
- * **                      DO NOT UPDATE MANUALLY                      **
- * **                                                                  **
  * ** To improve a translation please visit http://translatewiki.net   **
  * ** Detailed instructions on how to create or update translations at **
  * ** http://www.mantisbt.org/wiki/doku.php/mantisbt:translationshowto **
@@ -1766,4 +1759,4 @@ $s_dropzone_cancel_upload_confirmation = 'Are you sure you want to cancel this u
 $s_dropzone_remove_file = 'Remove file';
 $s_dropzone_remove_file_confirmation = '';
 $s_dropzone_max_files_exceeded = 'You cannot upload any more files.';
-$s_dropzone_not_supported = 'Dropzone.js does not support older browsers!';
+$s_dropzone_not_supported = 'Dropzone.js does not support older browsers!';