fcl-db: cosmetic: dbase: add reference to language IDs/codepages for DBaseIV


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25124 3ad0048d-3df7-0310-abae-a5850022a9f2
fcl-db: dbase: Remove erroneous language ID $20 Czech as it does not appear in references. Fixes issue #0024730: Incorrect dbf Language ID to Locale convert table for Czech locale Windows


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@25125 3ad0048d-3df7-0310-abae-a5850022a9f2