Remove duplicates in the pandas dataframe with respect to columns in python using dynamic columns list?

Question

Here i have a dataframe which looks like this

   X1  X2   X3
0   1   1   1
1   1   2   2
2   1   3   3
3   2   1   2
4   2   2   2
5   2   3   3
6   3   1   1

I want the output as below

   X1  X2   X3
1   1   2   2
2   1   3   3
3   2   1   2
5   2   3   3
6   3   1   1

Help me to find the easiest way to remove same values from dataframe