biology/py-macs2: Remove
MACS2 is dead upstream, with no plans to make it compatible with
cython 3.x or other newer dependencies. Though the port was
set to expire in another month, I'm removing it now to stop wasting
package building resources. It has not been buildable for some time.
(cherry picked from commit 08256be5a8582d2a23383495dc6a1ab477da3f97)