log_services: Fix BMC Journal Entries collection odata.id

This commit removes odata.id assertions so the odata.id becomes
Journal/Entries instead of BmcLog/Entries.

Tested:
 - Redfish Service Validator passes
 - The response from `curl -k -H "X-Auth-Token: $token"
   https://${bmc}/redfish/v1/Managers/bmc/LogServices/Journal/Entries`
   contained the correct odata.id,
   `{
     "@odata.id": "/redfish/v1/Managers/bmc/LogServices/Journal/Entries",
     "@odata.type": "#LogEntryCollection.LogEntryCollection",
     "Description": "Collection of BMC Journal Entries",
     ...`

Signed-off-by: Mohaimen Alsamarai <mohaimen.alsamrai@fii-na.com>
Signed-off-by: Charles Boyer <Charles.Boyer@fii-usa.com>
Change-Id: Ie9cfa52b141d9f5d0fc12945fa3936bad871a413