Cleans jets build.
Removes the build files that jets creates. Essentially, deletes
/tmp/jets. This will remove all build files for all jets projects. This is safe as jets uses
/tmp/jets merely as a cache to speed up incrementally builds. Cleaning this out can clean up cruft in the
/tmp/jets directory that builds over time.
[--noop], [--no-noop] # noop or dry-run mode [--mute], [--no-mute] # mute output [--sure], [--no-sure] # bypass are you sure prompt