Remove @FlaggedApi for android.os.Build.VANILLA_ICE_CREAM

main is always VIC+ now, remove the flagging that kept VANILLA_ICE_CREAM
out of the UDC based releases.

Bug: 264658905
Test: builds
Change-Id: Ib5fa827bedf6fd7de2b3c89fbf4a082f789ef556
2 files changed