[ Merge of http://go/wvgerrit/14900 ]
When releasing a license, usage entries were being released twice with
both OEMCrypto_DeleteUsageEntry and OEMCrypto_ForceDeleteUsageEntry being
called. The second call would always fail because the usage information had
already been released. The CdmSession::DeleteLicense methods will now only
handles deletion of license metadata and leave deletion of usage entries to
the CdmLicense class.
b/22097805
Change-Id: Ic55764d5357043d136e7d88583f709a4ceea3e64
6e2cc1a3ed