problem with .mkv file

Why can’t delete movie,in .mkv files(container)…it was delete and in couple seconds is remove in destination folder…opensuse 42.2…what is problem…
P.S. sorry for my bad english

what are you trying to do?
remove video from mkv file?
then try ffmpeg

ffmpeg -i mkvfile.mkv -acodec copy out.mka

that should create a mka file without the video, but what’s the point?
try google translate, write your issue in your language and paste google’s output