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

src/sensor/dummy/SDL_dummysensor.c

@@ -91,5 +91,3 @@ SDL_SensorDriver SDL_DUMMY_SensorDriver = {
 };
 
 #endif /* SDL_SENSOR_DUMMY || SDL_SENSOR_DISABLED */
-
-/* vi: set ts=4 sw=4 expandtab: */

src/sensor/dummy/SDL_dummysensor.h

@@ -19,5 +19,3 @@
   3. This notice may not be removed or altered from any source distribution.
 */
 #include "SDL_internal.h"
-
-/* vi: set ts=4 sw=4 expandtab: */