Revert "Fix possible crash if Xv window is outside of either crtc"

This reverts commit 9235531410.

This changes ABI.  False means there was a memory failure of some kind,
not that the video shouldn't be displayed

hw/xfree86/modes/xf86Crtc.c

@@ -2250,9 +2250,7 @@ xf86_crtc_clip_video_helper(ScrnInfoPtr pScrn,
 	    REGION_INIT (pScreen, &crtc_region_local, &crtc_box, 1);
 	    crtc_region = &crtc_region_local;
 	    REGION_INTERSECT (pScreen, crtc_region, crtc_region, reg);
-	} else
-	    return FALSE;
-
+	}
 	*crtc_ret = crtc;
     }