Removed the vi format comments from the source

Vim users can use the [editorconfig plugin](https://github.com/editorconfig/editorconfig-vim) to automatically set tab spacing for the SDL coding style.

Fixes https://github.com/libsdl-org/SDL/issues/6903

test/testautomation_joystick.c

@@ -88,5 +88,3 @@ SDLTest_TestSuiteReference joystickTestSuite = {
     joystickTests,
     NULL
 };
-
-/* vi: set ts=4 sw=4 expandtab: */