The monotonic package was needed for monotonic time operations when
running under Python runtimes older than 3.3. Since we now only support
versions higher than this, this third party package requirement can now
be removed.
Change-Id: I809de2f6fe257c80de7c81f9e08499a919f52ff8
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>