am e385ff3a: Do not close CDM session on removeKeys

* commit 'e385ff3a7fb52e66cc1d0e63a207dbf2f32f2362':
  Do not close CDM session on removeKeys

libwvdrmengine/cdm/core/src/cdm_engine.cpp

@@ -295,8 +295,6 @@ CdmResponseType CdmEngine::CancelKeyRequest(const CdmSessionId& session_id) {
   }
 
   // TODO(edwinwong, rfrias): unload keys here
-  delete iter->second;
-  sessions_.erase(session_id);
   DisablePolicyTimer();
   return NO_ERROR;
 }