How can i delete repeated rows?

I have a matrix A as follows

    A = 1,1,2,3,4
        2,1,2,3,4
I'd like to consider that the two rows are identical as the firs column only describes the index, so the output should like

    A = 1,1,2,3,4
or

   A= 2,1,2,3,4

when I make use of unique(A,'rows') it doesn't consider the two rows are identical

Any help, please.

Answer 1

[Guillaume]

Use the second return value of unique:

[~, rowstokeep] = unique(A(:, 2:end), 'rows');
newA = A(rowstokeep, :)