removing specifics elements from a matrix

I have the following matrix

acomb_w =

     1     1
     2     1
     3     1
     4     1
     1     2
     2     2
     3     2
     4     2
     1     3
     2     3
     3     3
     4     3
     1     4
     2     4
     3     4
     4     4
     

I need to get rid, automatically, of all the rows with doubles, so that:

acomb_w =

     2     1
     3     1
     4     1
     1     2
     3     2
     4     2
     1     3
     2     3
     4     3
     1     4
     2     4
     3     4

Can anyone help me?

Thanks!

Answer 1

[Stephen Cobeldick]

acomb_w = [...
     1     1
     2     1
     3     1
     4     1
     1     2
     2     2
     3     2
     4     2
     1     3
     2     3
     3     3
     4     3
     1     4
     2     4
     3     4
     4     4];
acomb_w(~diff(acomb_w,1,2),:) = []

acomb_w = 12×2

2 1 3 1 4 1 1 2 3 2 4 2 1 3 2 3 4 3 1 4

●

... some rows truncated here

[giuseppe insignito]

It worked! Even if I don't get what happen exactly...

[Stephen Cobeldick]

@giuseppe insignito : I'm glad. Please remember to accept my answer!