compositor: remove useless weston_compositor_repick call

compositor->focus was just unset, and weston_compositor_repick() has no
effect.

Signed-off-by: Tiago Vignatti <tiago.vignatti@intel.com>
diff --git a/src/compositor.c b/src/compositor.c
index 5626517..5420639 100644
--- a/src/compositor.c
+++ b/src/compositor.c
@@ -1975,7 +1975,8 @@
 		weston_compositor_repick(compositor);
 	} else {
 		compositor->focus = 0;
-		weston_compositor_repick(compositor);
+		/* FIXME: We should call wl_pointer_set_focus(seat,
+		 * NULL) here, but somehow that breaks re-entry... */
 	}
 }