LICENSE.txt gets added automatically by the Drupal.org packaging script, so shouldn't be included in the Git repository in any of your branches. And in fact, the license you've included is GPL v3 but code in the repository HAS to be GPL v2, which is one of the reasons a LICENSE.txt shouldn't be in the repository.
Comments
Comment #1
mundanity commentedYikes, nice catch. Removed in all branches.