util: remove outdated comment

This comment is not correct anymore.

PR-URL: nodejs#25255
Reviewed-By: James M Snell <[email protected]>

Author: BridgeAR

lib/internal/util/inspect.js

@@ -1099,8 +1099,6 @@ function formatPromise(ctx, value, recurseTimes) {
   if (state === kPending) {
     output = [ctx.stylize('<pending>', 'special')];
   } else {
-    // Using `formatValue` is correct here without the need to fix the
-    // indentation level.
     ctx.indentationLvl += 2;
     const str = formatValue(ctx, result, recurseTimes);
     ctx.indentationLvl -= 2;