cegui-mk2 is marked for autoremoval from testing

[Debian testing autoremoval watch]

cegui-mk2 0.8.7-3 is marked for autoremoval from testing on 2020-01-05

It is affected by these RC bugs:
936279: cegui-mk2: Python2 removal in sid/bullseye
943611: cegui-mk2: cegui-mk2 fails to package extensions for python 3.8

It (build-)depends on packages with these RC bugs:
937196: opencolorio: Python2 removal in sid/bullseye
944742: assimp: testsuite regression