Don't delete blank rows one by one — select them all at once with Go To Special, then remove them in a single step.
Do it with AI insteadSelect the range
Highlight the columns that contain the blanks.
Go To Special
Press F5 ▸ Special ▸ Blanks ▸ OK to select every empty cell.
Delete the rows
Right-click ▸ Delete ▸ Entire row.
Only if the selected columns are all blank in that row — select carefully.