[Mono.Data.Sqlite] Remove p/invokes to symbols that are not available on iOS version of libsqlite3
/usr/lib/libsqlite3.dylib: 77 symbols
[NOT FOUND] sqlite3_column_database_name
[NOT FOUND] sqlite3_column_database_name16
[NOT FOUND] sqlite3_column_origin_name
[NOT FOUND] sqlite3_column_origin_name16
[NOT FOUND] sqlite3_column_table_name
[NOT FOUND] sqlite3_column_table_name16
[NOT FOUND] sqlite3_key
[NOT FOUND] sqlite3_rekey
note: XI has unit tests that will detect if those symbols are added in a
future version of iOS.