Simplify ProjectShutdown.m

Author: eszmw

Utilities/ProjectShutdown.m

@@ -1,24 +1,2 @@
-function ProjectShutdown
-% Reset module to original state that is expected when loading in a new
-% MATLAB version.
-proj = currentProject;
-if isMATLABReleaseOlderThan("R2023b")
-    cd(proj.RootFolder)
-    try
-        if exist(fullfile("Utilities","OldVersions","MainMenuNew.mlx"),"file")
-            movefile("MainMenu.mlx", fullfile("Utilities","OldVersions","MainMenuOld.mlx"))
-            movefile(fullfile("Utilities","OldVersions","MainMenuNew.mlx"),fullfile(proj.RootFolder,"MainMenu.mlx"))
-        end
-    catch 
-        disp("Failed to move MainMenu.mlx.")
-    end
-    try
-        if exist(fullfile("Utilities","OldVersions","READMENew.mlx"),"file")
-            movefile("README.mlx", fullfile("Utilities","OldVersions","READMEOld.mlx"))
-            movefile(fullfile("Utilities","OldVersions","READMENew.mlx"),fullfile(proj.RootFolder,"README.mlx"))
-        end
-    catch
-        disp("Failed to move README.mlx.")
-    end
-end
-end
+% Close the StartUp app if still open:
+delete(findall(groot,'Name','StartUp App'))