Remove extended sqlite API
sqlite3_column_table_name16 is only available when sqlite is compiled with SQLITE_ENABLE_COLUMN_METADATA define[0], which doesn't seem to be the case for sqlite available in CI images and potentially elsewhere. This code is also Qt6-specific and the benefit is not directly apparent.
0: https://sqlite.org/c3ref/column_database_name.html
I'm not sure that this is necessary the best solution, but then again the cost seem to outweigh any potential benefit.
Edited by Michael Mischurow