Don't upgrade ID3v2.2 TDA frame when upgrading to TRCD

We already do this for TDAT. Using both parts, the year and the date,
would be better we the code currently doesn't have enough context to
do that.

BUG:228968


git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@1110552 283d02a7-25f6-0310-bc7c-ecb5cbfe19da