fix(lint): remove unused variables in readline and ConsoleObject (#26455)

### What does this PR do?

Just fixes lint errors

### How did you verify your code works?

src/js/builtins/ConsoleObject.ts

@@ -140,7 +140,7 @@ export function write(this: Console, input) {
 // to do extra work at startup, since most people do not need `console.Console`.
 // TODO: probably could extract `getStringWidth`; probably make that a native function. note how it is copied from `readline.js`
 export function createConsoleConstructor(console: typeof globalThis.console) {
-  const { inspect, formatWithOptions, stripVTControlCharacters } = require("node:util");
+  const { inspect, formatWithOptions } = require("node:util");
   const { isBuffer } = require("node:buffer");
 
   const { validateObject, validateInteger, validateArray, validateOneOf } = require("internal/validators");
@@ -155,7 +155,6 @@ export function createConsoleConstructor(console: typeof globalThis.console) {
   const StringPrototypePadStart = String.prototype.padStart;
   const StringPrototypeSplit = String.prototype.split;
   const NumberPrototypeToFixed = Number.prototype.toFixed;
-  const StringPrototypeNormalize = String.prototype.normalize;
   const ArrayPrototypeMap = Array.prototype.map;
   const ArrayPrototypeJoin = Array.prototype.join;
   const ArrayPrototypePush = Array.prototype.push;

src/js/node/readline.ts

@@ -79,7 +79,6 @@ const StringPrototypeEndsWith = String.prototype.endsWith;
 const StringPrototypeRepeat = String.prototype.repeat;
 const StringPrototypeStartsWith = String.prototype.startsWith;
 const StringPrototypeTrim = String.prototype.trim;
-const StringPrototypeNormalize = String.prototype.normalize;
 const NumberIsNaN = Number.isNaN;
 const NumberIsFinite = Number.isFinite;
 const MathCeil = Math.ceil;