fife is marked for autoremoval from testing

[Debian testing autoremoval watch]

fife 0.4.2-1 is marked for autoremoval from testing on 2020-04-07

It is affected by these RC bugs:
951962: fife: FTBFS: ./obj-x86_64-linux-gnu/CMakeFiles/CMakeTmp/./obj-x86_64-linux-gnu/CMakeFiles/CMakeTmp/src.c:11: undefined reference to `pthread_create'
953016: fife: FTBFS after avoiding #951962: swig4.0: Deprecated command line option: -nosafecstrings. This option is no longer supported.