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
diff --git a/control/main.cpp b/control/main.cpp
index ae46caa..3596b14 100644
--- a/control/main.cpp
+++ b/control/main.cpp
@@ -104,7 +104,7 @@
         stdplus::signal::block(SIGUSR1);
         sdeventplus::source::Signal sigUsr1(
             event, SIGUSR1,
-            std::bind(&json::Manager::sigUsr1Handler, &manager,
+            std::bind(&json::Manager::dumpDebugData, &manager,
                       std::placeholders::_1, std::placeholders::_2));
 
         phosphor::fan::util::SDBusPlus::getBus().request_name(CONTROL_BUSNAME);