Backed out the viewport and cliprect changes in 9fb5a9ccac

This ended up being lots of application code churn without any real benefit in practice.

test/testcontroller.c

@@ -2088,7 +2088,7 @@ int main(int argc, char *argv[])
     SDL_RenderPresent(screen);
 
     /* scale for platforms that don't give you the window size you asked for. */
-    SDL_SetRenderLogicalPresentation(screen, SCREEN_WIDTH, SCREEN_HEIGHT,
+    SDL_SetRenderLogicalPresentation(screen, (int)SCREEN_WIDTH, (int)SCREEN_HEIGHT,
                                      SDL_LOGICAL_PRESENTATION_LETTERBOX,
                                      SDL_SCALEMODE_LINEAR);