The majority of files in qmake/ have non-LGPL licensing.
Remove the mix of licenses and follow the majority.
Not sure what is the type of the files in qmake/
according to QUIP-18 [1].
[1]: https://contribute.qt-project.org/quips/18
Task-number: QTBUG-121787
Change-Id: I4003daada9e20b9ea4524de89ba49fbe0880ec23
Reviewed-by: Kai Köhne <kai.koehne@qt.io>
(cherry picked from commit 3828b30951e3bdaa8227d0ade14725de04593671)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>