build: Don't disable the monitor when using QEMU_PIPE

Performance is about the same, it does not appear to cause issues,
and older versions of QEMU don't support this flag.

Change-Id: Ie45a2396c7b0d3098923244d92b15422491413a1
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
1 file changed