Remove the --ignition-generators flag.

test/mjsunit/harmony/generators-turbo.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --ignition --ignition-generators --harmony-do-expressions
+// Flags: --ignition --harmony-do-expressions
 // Flags: --allow-natives-syntax --turbo --turbo-from-bytecode
 
 
 // This file is identical to mjsunit/harmony/generators.js, except for its Flags
 // lines. The purpose is to explicitly mention --turbo-from-bytecode such that
 // Clusterfuzz can thoroughly test the new generators implementation.
 
 
 function MaybeOptimizeOrDeoptimize(f) {
   let x = Math.random();  // --random-seed makes this deterministic
@@ skipping 642 matching lines @@
   let iterable = {
     [Symbol.iterator]() {
       return { next() { return {} } };
     }
   };
   let foo = function*() { yield* iterable };
   g = foo();
   g.next();
   assertThrows(() => Throw(g), TypeError);
 }