Mark DEPRECATED ans set EXPIRATION on 2014-09-05 as "Rights to BLAST 2.0 (WU-BLAST) have been acquired by Advanced Biocomputing, LLC". AB has released version 3 but nothing specific to FreeBSD. And WU-BLAST is no longer maintained.
Created attachment 143379 [details]
Patch for blast
A commit references this bug:
Date: Thu Jun 19 11:55:50 UTC 2014
New revision: 358383
biology/blast: Deprecate for removal after 4 September 2014
This unstaged port will be removed for legal reasons.
Submitted by: Muhammad Rahman
Approved by: portmgr (implicit)
Note that I couldn't apply the patch because it had DOS line endings.