monetdb_insert_id: use existing monetdb_quote_ident
monetdb_insert_id: use existing monetdb_quote_ident

Replace db_quote_ident with monetdb_quote_ident.  Fixes bug #2937.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb