Report item stats when removing a change
Report item stats when removing a change

If a change is removed outside of the main process method (eg
it is superceded), stats were not reported.  Report them in that
case.

Change-Id: I9e753599dc3ecdf0d4bffc04f4515c04d882c8be

gooddata/zuul,devdattakulkarni/zuul_messaging,gooddata/zuul,gooddata/zuul,wikimedia/integration-zuul,wikimedia/integration-zuul,gooddata/zuul,wikimedia/integration-zuul,devdattakulkarni/zuul_messaging,gooddata/zuul,wikimedia/integration-zuul,devdattakulkarni/zuul_messaging