Update format-test.cc

Remove unnecessary comments.

test/format-test.cc

@@ -1788,7 +1788,6 @@ FMT_BEGIN_NAMESPACE
 template <> struct formatter<point> : nested_formatter<double> {
   auto format(point p, format_context& ctx) const -> decltype(ctx.out()) {
     return write_padded(ctx, [this, p](auto out) -> decltype(out) {
-      // Namespace-qualify to avoid ambiguity with std::format_to
       return fmt::format_to(out, "({}, {})", nested(p.x), nested(p.y));
     });
   }