How do i delete rows from data frame in pandas?

Question

This is aggregation to the column from the data frame:

Material_Type   
ZHW1        155437.557652
ZHW3        12432.078625
ZUB1        487.222162

And I want to delete the ZUB1 category.

I tried:

 df.loc[(df!='ZUB1').any(1)]

and Im stiil geting the same count of rows from the original data frame. tnx in advance.