How to delete the repeated character in the info column in pandas?

Question

For example, in the row “A;AC=a,a;AD=E;AE=W;AF=u,u;AG=Q;AH=R”, there is repeated “,a” and “,u”. It is “A;AC=a;AD=E;AE=W;AF=u;AG=Q;AH=R” which is result wanted. It is quite h