Drop cgal

[iarspider]

Notice: CGAL is now (>= 5.0) a header-only library.

[iarspider]

please test

[cmsbuild]

A new Pull Request was created by @iarspider for branch IB/CMSSW_12_1_X/master.

@smuzaffar, @mrodozov, @iarspider can you please review it and eventually sign? Thanks.
@perrotta, @dpiparo, @qliphy you are the release manager for this.
cms-bot commands are listed here

[smuzaffar]

@iarspider , looks like this external is also not needed any more. It was only used ion one cmssw package but has been dropped ( cms-sw/cmssw#18684 (comment) ) few years ago. I would suggest to remove this external too.

[cmsbuild]

Pull request #7284 was updated.

[smuzaffar]

test parameters:

• full_cmssw = true

[smuzaffar]

please test

[smuzaffar]

+externals

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next IB/CMSSW_12_1_X/master IBs after it passes the integration tests. This pull request will now be reviewed by the release team before it's merged. @perrotta, @dpiparo, @qliphy (and backports should be raised in the release meeting by the corresponding L2)