remove update_layout from text-node, as it doesn't seem to be needed

src/text-node.c

@@ -84,7 +84,6 @@ int text_node_handle(UINode *node, enum UIEvent ev, size_t d, void *p)
             if (!n->layout) {
                 break;
             }
-            pango_cairo_update_layout(n->node.drw, n->layout);
             if (n->caret_index >= 0) {
                 if (!n->caret_node) {
                     n->caret_node = node_new(&n->node, "caret");