ktp-auth-handler is marked for autoremoval from testing

[Debian testing autoremoval watch]

ktp-auth-handler 17.08.3-2 is marked for autoremoval from testing on 2020-04-07

It (build-)depends on packages with these RC bugs:
952060: libsignon-glib: FTBFS: signon-auth-service.c:72:13: error: 
G_ADD_PRIVATE [-Werror]