SAP Functional, Basis and ABAP Programming Reference Books
Delete storage location in material master

Assuming that you have create a Material master in Plant : P001 and Storage location : 0001 and 0002. 

Later, you would like to delete storage location : 0002 in this Material master. 

In MM06 Enter Material number, plant and storage location. 

Press enter, and set the cross in front of storage location. 

Next, you need to run archiving to get it physically out of the SAP system.

Best regards,
SAP Basis, ABAP Programming and Other IMG Stuff