simplify code

src/gui_load_mod_file.m

@@ -11,7 +11,7 @@ function gui_load_mod_file(hObject)
 % SPECIAL REQUIREMENTS
 %   none
 
-% Copyright (C) 2003-2019 Dynare Team
+% Copyright (C) 2003-2020 Dynare Team
 %
 % This file is part of Dynare.
 %
@@ -166,9 +166,7 @@ end
             if strcmp(answer,'No')
                 return
             end
-            M_ = [];
-            oo_ = [];
-            options_ = [];
+            clear oo_ M_ options_ estim_params_ bayestopt_ estimation_info ex0_ ys0_ dataset_ dataset_info
         end
 
         %save globals
@@ -190,7 +188,7 @@ end
             jObj.stop;
             jObj.setBusyText('Done');
 
-            %restore globals
+            %restore GUI globals
             evalin('base', 'global dynare_gui_ project_info model_settings');
             dynare_gui_ = glob_dynare_gui_;
             project_info = glob_project_info;