Revert "Add apache license and cla." and all following.

This reverts the set from commit ae1e32428e03fee36109ccab6e316ad03ab813a6.

The apache experiment has been moved to license-doc repository:
https://github.com/engelnyst/license-doc/commit/2c408b0d02b56033e80f9a1132c68a6d0f17adab

Signed-off-by: Engel Nyst <engel.nyst@gmail.com>