Remove bogus flags from call-counts.js test.

test/mjsunit/call-counts.js

 // Copyright 2015 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: --allow-natives-syntax --noalways-opt --no-vector-stores
+// Flags: --allow-natives-syntax --noalways-opt
 
 // We disable vector store ICs because slot indices change when this option
 // is enabled.
 
 // Locations in the type feedback vector where call counts are maintained for
 // the two calls made from bar();
 
 (function() {
   const kFooCallExtraIndex = 5;
   const kArrayCallExtraIndex = 7;
@@ skipping 21 matching lines @@
   }
 
   var a = [1, 2, 3];
   bar(a);
   assertEquals(10, GetCallCount(bar, kFooCallExtraIndex));
   assertEquals(5, GetCallCount(bar, kArrayCallExtraIndex));
 
   %OptimizeFunctionOnNextCall(bar);
   bar(a);
 })();