Remove timer in favor of sdeventplus/utility/timer

This removes the custom timer implementation and moves to the
sdeventplus utility. Functionally this should make no change

Tested:
    Built and run through the unit test suite.

Change-Id: Ib7ee90d489d5db72496aaaca91c3cf5490ad47d6
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/Makefile.am b/Makefile.am
index a20fe8a..5d81f75 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,18 +5,16 @@
 libfan_la_LIBADD = \
 	$(PHOSPHOR_DBUS_INTERFACES_LIBS) \
 	$(PHOSPHOR_LOGGING_LIBS) \
-	$(SDBUSPLUS_LIBS) \
-	$(SDEVENTPLUS_LIBS)
+	$(SDBUSPLUS_LIBS)
 libfan_la_CXXFLAGS = \
 	$(PHOSPHOR_DBUS_INTERFACES_CFLAGS) \
 	$(PHOSPHOR_LOGGING_CFLAGS) \
 	$(SDBUSPLUS_CFLAGS) \
-	$(SDEVENTPLUS_CFLAGS) -flto
+	-flto
 libfan_la_SOURCES = \
-	utility.cpp \
-	timer.cpp
+	utility.cpp
 
-SUBDIRS = . test sdevent/test evdevpp/test
+SUBDIRS = . sdevent/test evdevpp/test
 
 if WANT_PRESENCE
 SUBDIRS += presence