Revert prematurely-committed bam_pileup work
Revert prematurely-committed bam_pileup work

Revert in-progress change 732ae82e9c8fd52ba6688a7c39a322617716483a
("bam_pileup: Improved read pair overlaps clipping. Disabled for now
as more testing is needed.") for now; Petr will recommit it when the
work is complete.

Kontakter/samtools,mcshane/samtools,Kontakter/samtools,Kontakter/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools,Kontakter/samtools,Kontakter/samtools