Delete all copies of duplicates from DataFrame

Question

How do I delete duplicates from a DataFrame? I have used drop_duplicates() but it still keeps 1 copy of the row. I want to delete all traces of the duplicate.

df:

Name  Age     Sex
0  James   24    Male
1  Alice   28  Female
2   Phil   40    Male
3  James   24    Male

code snip:

data = {"Name": ["James", "Alice", "Phil", "James"],
        "Age": [24, 28, 40, 24],
        "Sex": ["Male", "Female", "Male", "Male"]}
df = pd.DataFrame(data)

df output desired:

Name  Age     Sex
1  Alice   28  Female
2   Phil   40    Male