In [4]:
df.drop(['CommonId','PupId','PickupDate','TotalCharges'],
        axis=1,inplace=True)
df.head()
Out[4]:
OrderId OrderDate UserId
0 262 2009-01-11 47
1 278 2009-01-20 47
2 294 2009-02-03 47
3 301 2009-02-06 47
4 302 2009-02-06 47