Revert "testautomation: fix renderer leak in video tests"

This reverts commit 2f13f66c71d11115381ea6bbdece4bcdec252584.

Not needed if renderers are once again implicitly cleaned up when their associated windows are destroyed.

test/testautomation_video.c

@@ -55,7 +55,6 @@ static SDL_Window *createVideoSuiteTestWindow(const char *title)
              * so delay to give the window time to actually appear on the desktop.
              */
             SDL_Delay(100);
-            SDL_DestroyRenderer(renderer);
         } else {
             SDLTest_Log("Unable to create a renderer, some tests may fail on Wayland/XWayland");
         }
@@ -1736,7 +1735,6 @@ static int video_setWindowCenteredOnDisplay(void *arg)
                          * so delay to give the window time to actually appear on the desktop.
                          */
                         SDL_Delay(100);
-                        SDL_DestroyRenderer(renderer);
                     } else {
                         SDLTest_Log("Unable to create a renderer, tests may fail under Wayland");
                     }