protected boolean dropBaseStore(TableIdentifier tableStoreIdentifier, boolean purge) {
    return tableMetaStore.doAs(() -> icebergCatalog.dropTable(tableStoreIdentifier, purge));
  }
drop a mixed-format table

@param table - mixed table
@param purge - purge data when drop table
@return - true if table was deleted successfully.
amoro-format-iceberg/src/main/java/org/apache/amoro/mixed/MixedTables.java