[Debian-med-packaging] python-pbcore is marked for autoremoval from testing

[Debian testing autoremoval watch]

python-pbcore 1.6.5+dfsg-1 is marked for autoremoval from testing on 2019-03-21

It (build-)depends on packages with these RC bugs:
919928: htslib, src:python-pysam: htslib breaks python-pysam autopkgtest