Use the common timer class

The common timer class from sdbusplus offers all the timer goodness that
we currently use. The unit test is also no longer needed (and has been
added to sdbusplus's version of the timer.hpp implementation).

Change-Id: I278817489433a29ca739f70fdacd8bb897797d66
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
diff --git a/host-cmd-manager.hpp b/host-cmd-manager.hpp
index 949e798..9a5891c 100644
--- a/host-cmd-manager.hpp
+++ b/host-cmd-manager.hpp
@@ -4,7 +4,7 @@
 #include <queue>
 #include <sdbusplus/bus.hpp>
 #include <sdbusplus/bus/match.hpp>
-#include <timer.hpp>
+#include <sdbusplus/timer.hpp>
 #include <tuple>
 
 namespace phosphor
@@ -101,7 +101,7 @@
     std::queue<CommandHandler> workQueue{};
 
     /** @brief Timer for commands to host */
-    phosphor::ipmi::Timer timer;
+    phosphor::Timer timer;
 
     /** @brief Match handler for the requested host state */
     sdbusplus::bus::match_t hostTransitionMatch;