[SYNCOPE-354] ResourceOperation.DELETE not always resolve to delete() on connector, it might also become update() - removing the condition from LDAPMembershipSyncActions

git-svn-id: https://svn.apache.org/repos/asf/syncope/branches/1_1_X@1471403 13f79535-47bb-0310-9956-ffa450edef68
[SYNCOPE-354] Merge from 1_1_X

git-svn-id: https://svn.apache.org/repos/asf/syncope/trunk@1471405 13f79535-47bb-0310-9956-ffa450edef68