gazebo is marked for autoremoval from testing

[Debian testing autoremoval watch]

gazebo 11.0.0+dfsg1-2 is marked for autoremoval from testing on 2020-06-16

It (build-)depends on packages with these RC bugs:
959596: blender: FTBFS: subprocess.CalledProcessError: Command '['/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/bin/blender', '--help']' returned non-zero exit status 127.