control: Remove the sdevent defer redirect on USR1

The signal handler provided by sdeventplus already calls the provided
callback function from the event loop, there is no need to use a 'defer'
event source that also just calls a function from the event loop.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: Ie51c6abc9260a8fc43b13844356c62080835ea38
3 files changed