Legend for pie chart from pivot table - repeating subcategory

I was hoping somebody could help.

I attach a file of my data, pivot table and resultant pie chart. I want a way for the legend to just have the categories, 'blue', 'red' and 'yellow', and not to have 'big' in front of each. Is it possible?

The big is the sub-category that I am sorting for in the pivot table.

Thanks for your help!

You can not remove them from the chart. But if you move 'Type Club' to page field, rather than row, the outer layer of labels will be removed