How to delete a row?

How to delete a row?

There used to be an X button in the menu to delete a row in Sheets. It's gone, now there's an Insert menu but I can't find any way to delete a row. We use Sheets to manage weekly orders and need to delete and move info a lot. We can copy and paste the cell contents but are now left with loads of empty rows we can't get rid of - we tend to have blocks of 10-50 rows to delete at once.

Any help?