grr is marked for autoremoval from testing

[noreply@release.debian.org (Debian testing autoremoval watch)]

grr 3.1.0.2+dfsg-3 is marked for autoremoval from testing on 2017-09-04

It (build-)depends on packages with these RC bugs:
853300: aff4: ftbfs with GCC-7
853663: sleuthkit: ftbfs with GCC-7