[R-pkg-team] r-bioc-ensembldb is marked for autoremoval from testing

[Debian testing autoremoval watch]

r-bioc-ensembldb 2.6.1+dfsg-1 is marked for autoremoval from testing on 2018-12-25

It (build-)depends on packages with these RC bugs:
913527: r-bioc-rtracklayer: r-bioc-rtracklayer FTBFS with r-bioc-s4vectors 0.20