exec: rm --no-subreaper flag
This was removed from runc exec by commit about 5 years ago,
so it's time to remove it entirely.
@@ -84,11 +84,6 @@ following will output a list of processes running in the container:
Value: &cli.StringSlice{},
Usage: "add a capability to the bounding set for the process",
},
- cli.BoolFlag{
- Name: "no-subreaper",
- Usage: "disable the use of the subreaper used to reap reparented processes",
- Hidden: true,
- },
cli.IntFlag{
Name: "preserve-fds",
Usage: "Pass N additional file descriptors to the container (stdio + $LISTEN_FDS + N in total)",
