Remove DDC custom error list now that strong mode analyzer handles it

test/codegen_expected/corelib/iterable_generate_test.js

 dart_library.library('corelib/iterable_generate_test', null, /* Imports */[
   'dart_sdk',
   'expect'
 ], function load__iterable_generate_test(exports, dart_sdk, expect) {
   'use strict';
   const core = dart_sdk.core;
   const _interceptors = dart_sdk._interceptors;
   const dart = dart_sdk.dart;
   const dartx = dart_sdk.dartx;
   const expect$ = expect.expect;
   const iterable_generate_test = Object.create(null);
   let JSArrayOfint = () => (JSArrayOfint = dart.constFn(_interceptors.JSArray$(core.int)))();
   let JSArrayOfString = () => (JSArrayOfString = dart.constFn(_interceptors.JSArray$(core.String)))();
+  let IterableOfString = () => (IterableOfString = dart.constFn(core.Iterable$(core.String)))();
   let IterableOfint = () => (IterableOfint = dart.constFn(core.Iterable$(core.int)))();
   let IteratorOfint = () => (IteratorOfint = dart.constFn(core.Iterator$(core.int)))();
-  let IterableOfString = () => (IterableOfString = dart.constFn(core.Iterable$(core.String)))();
   let IteratorOfString = () => (IteratorOfString = dart.constFn(core.Iterator$(core.String)))();
   let dynamicAnddynamicTovoid = () => (dynamicAnddynamicTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [dart.dynamic, dart.dynamic])))();
   let intToString = () => (intToString = dart.constFn(dart.definiteFunctionType(core.String, [core.int])))();
   let VoidToIterableOfString = () => (VoidToIterableOfString = dart.constFn(dart.definiteFunctionType(IterableOfString(), [])))();
   let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
   iterable_generate_test.main = function() {
     let checkedMode = false;
     dart.assert(checkedMode = true);
     function test(expectedList, generatedIterable) {
       expect$.Expect.equals(dart.dload(expectedList, 'length'), dart.dload(generatedIterable, 'length'));
       expect$.Expect.listEquals(core.List._check(expectedList), core.List._check(dart.dsend(generatedIterable, 'toList')));
     }
     dart.fn(test, dynamicAnddynamicTovoid());
     test([], core.Iterable.generate(0));
     test(JSArrayOfint().of([0]), core.Iterable.generate(1));
     test(JSArrayOfint().of([0, 1, 2, 3, 4]), core.Iterable.generate(5));
-    test(JSArrayOfString().of(["0", "1", "2", "3", "4"]), core.Iterable.generate(5, dart.fn(x => dart.str`${x}`, intToString())));
+    test(JSArrayOfString().of(["0", "1", "2", "3", "4"]), IterableOfString().generate(5, dart.fn(x => dart.str`${x}`, intToString())));
     test(JSArrayOfint().of([2, 3, 4, 5, 6]), core.Iterable.generate(7)[dartx.skip](2));
     test(JSArrayOfint().of([0, 1, 2, 3, 4]), core.Iterable.generate(7)[dartx.take](5));
     test([], core.Iterable.generate(5)[dartx.skip](6));
     test([], core.Iterable.generate(5)[dartx.take](0));
     test([], core.Iterable.generate(5)[dartx.take](3)[dartx.skip](3));
     test([], core.Iterable.generate(5)[dartx.skip](6)[dartx.take](0));
     let it = IterableOfint().generate(5);
     expect$.Expect.isTrue(IterableOfint().is(it));
     expect$.Expect.isTrue(IteratorOfint().is(it[dartx.iterator]));
     expect$.Expect.isTrue(!IterableOfString().is(it));
     expect$.Expect.isTrue(!IteratorOfString().is(it[dartx.iterator]));
     test(JSArrayOfint().of([0, 1, 2, 3, 4]), it);
     let st = IterableOfString().generate(5, dart.fn(x => dart.str`${x}`, intToString()));
     expect$.Expect.isTrue(IterableOfString().is(st));
     expect$.Expect.isTrue(IteratorOfString().is(st[dartx.iterator]));
     expect$.Expect.isFalse(IterableOfint().is(st));
     expect$.Expect.isFalse(IteratorOfint().is(st[dartx.iterator]));
     test(JSArrayOfString().of(["0", "1", "2", "3", "4"]), st);
     if (checkedMode) {
       expect$.Expect.throws(dart.fn(() => IterableOfString().generate(5), VoidToIterableOfString()));
     }
   };
   dart.fn(iterable_generate_test.main, VoidTodynamic());
   // Exports:
   exports.iterable_generate_test = iterable_generate_test;
 });