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

[Debian testing autoremoval watch]

elastix 4.9.0-1 is marked for autoremoval from testing on 2019-10-02

It (build-)depends on packages with these RC bugs:
935086: insighttoolkit4: FTBFS with GCC-9: use of undeclared identifier '__builtin_is_constant_evaluated'