test suite: add missing deletion of downloaded binaries

tests/decision_rules/example1.mod

@@ -85,3 +85,4 @@ if max(max(abs(oo_.dr.ghxx-dyn_432_results.oo_.dr.ghxx)))>1e-6 || max(max(abs(oo
     error('Second order decision rules wrong')
 end
 
+delete('example1_results_dyn_432.mat')

tests/decision_rules/third_order/comparison_policy_functions_dynare_mathematica.m

@@ -129,3 +129,4 @@ if max(max(max(max(abs(gxxx-gxxx_dyn))))) > 1e-8
 else max(max(max(max(abs(gxxx-gxxx_dyn)))))
 end
 
+delete('FV_2011_policyfunctions.mat')

tests/deterministic_simulations/lola_solve_one_boundary.mod

@@ -979,3 +979,5 @@ end;
 % *******************************************
 
 simul(periods=125,maxit=100);
+
+delete('lola_data.mat')