Add a delete a row functionality to the current row.

Change 1 - Saving a price break with an empty entry field (Current Design)

Proposed Change
The user has added a new row but has not entered any data yet. User decides they only
Need that 1 price break. User should be able to "Save" price breaks with empty entry field. 
When a user clicks to add a 2nd row but does not place any data into the entry field, the user
should be allowed to save this 1 single price break. 
Change 2 - Allow user to delete completed rows 2 or 3Proposed Change
The user places a 2nd price break but there is no way to delete row 2 (or 3).Allow the user to delete a row using our "delete" X icon for rows 2 and 3.