Remove unused functions

test/built-ins/Proxy/construct/return-not-object-throws-number.js

@@ -11,8 +11,6 @@ info: |
 features: [Proxy]
 ---*/
 
-function Target() {}
-
 var P = new Proxy(function() {
   throw new Test262Error('target should not be called');
 }, {

test/built-ins/Proxy/construct/return-not-object-throws-string.js

@@ -11,8 +11,6 @@ info: |
 features: [Proxy]
 ---*/
 
-function Target() {}
-
 var P = new Proxy(function() {
   throw new Test262Error('target should not be called');
 }, {

test/built-ins/Proxy/construct/return-not-object-throws-symbol.js

@@ -11,8 +11,6 @@ info: |
 features: [Proxy, Symbol]
 ---*/
 
-function Target() {}
-
 var P = new Proxy(function() {
   throw new Test262Error('target should not be called');
 }, {

test/language/expressions/addition/coerce-bigint-to-string.js

@@ -21,8 +21,6 @@ info: |
 features: [BigInt]
 ---*/
 
-function ToString(x) { return x + ""; }
-
 assert.sameValue(-1n + "", "-1");
 assert.sameValue("" + -1n, "-1");
 assert.sameValue(0n + "", "0");

test/language/expressions/assignment/dstr/array-rest-iter-rtrn-close-err.js

@@ -41,7 +41,6 @@ info: |
 ---*/
 var returnCount = 0;
 var unreachable = 0;
-function ReturnError() {}
 var iterable = {};
 var iterator = {
   return: function() {

test/language/expressions/delete/11.4.1-4.a-11.js

@@ -13,9 +13,6 @@ flags: [noStrict]
 ---*/
 
 (function() {
-  function foo(a, b) {
-    return delete arguments.callee;
-  }
   var d = delete arguments.callee;
 
   assert.sameValue(d, true, 'd');

test/language/statements/for-of/dstr/array-rest-iter-rtrn-close-err.js

@@ -50,7 +50,6 @@ info: |
 ---*/
 var returnCount = 0;
 var unreachable = 0;
-function ReturnError() {}
 var iterable = {};
 var iterator = {
   return: function() {