void rbdelete(rbtree *tree, testimone *q){
	testimone *r, *s;

	if(strcmp(q->left->nome, tree->nil->nome)==0 || strcmp(q->right->nome, tree->nil->nome)==0)
		r = q;
	else
		r = treesucc(tree,q);
	s = r->left != tree->nil ? r->left : r->right;
	s->father = r->father;
	if(strcmp(r->father->nome ,tree->nil->nome)==0)
		tree->root = s;
	else
		if(strcmp(r->nome, r->father->left->nome)==0)
			r->father->left = s;
		else
			r->father->right = s;
	if(strcmp(r->nome, q->nome) != 0)
		strcpy(q->nome, r->nome);
	if(r->c == black)
		fixup(tree, s);
	free(r);
}