928045: delete excessive fails to remove all excessive entitlements

logic for removing excess only allowed one entitlement removal per pool refresh
updated the spec test. was only testing for a single entitlement removal.
Merge branch 'master' into wottop/928045
Change to use correct REST call
Merge pull request #223 from candlepin/wottop/928045

928045: delete excessive, fails to remove all excessive entitlements