Compare 2 columns, delete cells with no match

I need to compare 2 columns on the same sheet, A & B, and then delete the cells in column A that do not match column B...Column A has 9153 rows and B has 1923 rows.

I had this matching the rows and returning the values that matched to another sheet in the workbook, but deleting the cells that don't match on the same sheet would be 10x more beneficial for me.

If someone could please help me out it would be much appreciated!