Remove oldmanual setting from projects.yaml

Change I39f93f67b96961cd9991b6a13fecddb16e3a20fa remove the usage
of oldmanual but not oldmanual itself.

Remove it, it's not used anymore.

Change-Id: I221d37d74c400d0e2a412ec2f56af84c36c83892
Merge "Remove oldmanual setting from projects.yaml"