remove TODO

src/validate/js/propValidators/data.ts

@@ -6,8 +6,6 @@ const disallowed = new Set(['Literal', 'ObjectExpression', 'ArrayExpression']);
 export default function data(validator: Validator, prop: Node) {
 	while (prop.type === 'ParenthesizedExpression') prop = prop.expression;
 
-	// TODO should we disallow references and expressions as well?
-
 	if (disallowed.has(prop.value.type)) {
 		validator.error(`'data' must be a function`, prop.value.start);
 	}