I'll revert PR 27844 for now (except the tests).

Since SQLite works better when we keep the number of non-reset statements to a minimum, we need to ensure that we reset statements when we're done with them (sqlite3_step() returns SQLITE_DONE or an error). Before doing such a change, we should clean up _pysqlite_query_execute() so we don't need to sprinkle that function with pysqlite_statement_reset's. I plan to do this before attempting to clean up reset usage again.