Revert "release_build_handler: Add %GLOBAL_LICENSE% variable"

We now have the files in two different repositories, so there is
no need for this work around anymore.

This reverts commit 1782485ba45432d4bf64c395b8c6dbdb1c5327be.

Change-Id: Idee8f95f3e0af02fbd3aac17d203a07b19872947
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>