event: Remove in favor of sdeventplus

Use the new library provided to all openbmc projects instead of rolling
our own managed pointer.

Tested: Compiled

Change-Id: I4993d4340e0e0aa5898e73ef815baa81b0e8a2bc
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/configure.ac b/configure.ac
index 94be4ee..3a6cff8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,6 +26,8 @@
 
 PKG_CHECK_MODULES([SDBUSPLUS], [sdbusplus],,
     AC_MSG_ERROR(["Requires sdbusplus package."]))
+PKG_CHECK_MODULES([SDEVENTPLUS], [sdeventplus],,
+    AC_MSG_ERROR(["Requires sdeventplus package."]))
 PKG_CHECK_MODULES([PHOSPHOR_LOGGING], [phosphor-logging],,\
     AC_MSG_ERROR(["Requires phosphor-logging package."]))
 PKG_CHECK_MODULES([PHOSPHOR_DBUS_INTERFACES], [phosphor-dbus-interfaces],,\