Revert "swait: Add a few more users"

This reverts commit 6f949fe5c42e639f6d6ab2c267bfc1d57ce5ec02.

Seems that swait updates for 3.4-rt broke things.

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Linux 3.4.82-rt102
Merge branch 'v3.4-rt' of git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt