Remove public api variant of tracinglib

Remove unused public variant of the tracinglib to reduce maintenance
burden.

Test: m droid
Flag: EXEMPT unused build module removal
Bug: 358541864
Merged-In: I33a4ed2d7c74455164cada2a120524bf31a5aeab
Change-Id: I33a4ed2d7c74455164cada2a120524bf31a5aeab
4 files changed