delete unused file

matlab/tfgm/datasets/run_get_bird_car_mix_icassp.m

-clc; clear; close all;
-
-%%
-
-[signal_params, dgt_params, w,dgt, signals, alpha, seuil,...,
-    r, mask]= get_cuicui_mix_icassp();
\ No newline at end of file