Don't update a wibox' position when it is created

For a floating wibox which isn't visible, all what wibox_position_update()
does is setting the geometry fields in the simplewindow struct. Since the next
thing luaA_wibox_new() does is setting the wibox' geometry, this call makes
no sense.

Signed-off-by: Uli Schlachter <psychon@znc.in>

wibox.c

@@ -732,9 +732,6 @@ luaA_wibox_new(lua_State *L)
         break;
     }
 
-    /* recompute position */
-    wibox_position_update(w);
-
     w->sw.geometry.x = luaA_getopt_number(L, 2, "x", 0);
     w->sw.geometry.y = luaA_getopt_number(L, 2, "y", 0);
     w->sw.geometry.width = luaA_getopt_number(L, 2, "width", 0);