lua-torch-image is marked for autoremoval from testing

[Debian testing autoremoval watch]

lua-torch-image 0~20170420-g5aa1881-6 is marked for autoremoval from testing on 2018-09-30

It (build-)depends on packages with these RC bugs:
906490: lua-torch-torch7: FTBFS in buster/sid (THGeneral.h: No such file or directory)