Remove bugfix text flags.

Bug: 331717791
Bug: 344656282
Bug: 350691716
Bug: 364533012
Flag: EXEMPT removing fix_font_update_failure
Flag: EXEMPT removing portuguese_hyphenator
Flag: EXEMPT removing dont_break_email_in_nobreak_tag
Test: N/A
Change-Id: Ifce748de70eb247ab6b5cc2e68ee81aeccaca748
3 files changed