CSD: Remove volume based warning when CSD is enabled

The sound dose method already covers the volume based warnings that
comply with 10.6.5 of IEC62368-1. We do not need to implement the 10.6.5
requirements when sound dose method is enabled.

Test: manual with flag override
Bug: 280748088
Change-Id: I3abc8b4f57f89ff9553ec80cc6f754f57e4ace29