Final cleanup.

Moved SR parser files into their own folder for consistency with all other trace types.
Deleted Tag/Error trace types (never used or to be used).
Deleted remaining references to flickerlib.
Removed ParsingUtils#addDefaultProtoFields and related flag in parsers.

Bug: b/311643292
Test: npm run test:unit:ci
Change-Id: I6c2c80ad27d9cc7e819ed285ccd2e193fab40fc6
38 files changed