Remove vague GPL headers from browser tests with dead links
They don't actually state what license they're under, they just link
to a license file that no longer exists. Prior to deletion, it was:
https://phabricator.wikimedia.org/diffusion/GQAB/browse/master/LICENSE;
0135f0c57627db28bdf451b5b8d21a1a60ec0b06
That's GPL! It's kind of weird to have a non-standard GPL header like this
so just remove them. Rest of the browser test files don't contain any sort
of header at all
Change-Id: I7b49b806588f029fc6017915a19994a0d52b7177