Remove experimental flags that are now required

test/mjsunit/elements-kind-depends.js

 // Copyright 2011 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
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 //       from this software without specific prior written permission.
 //
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 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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-// Flags: --allow-natives-syntax --smi-only-arrays
+// Flags: --allow-natives-syntax
 
 function burn() {
   var a = new Array(3);
   a[0] = 10;
   a[1] = 15.5;
   a[2] = 20;
   return a;
 }
 
 function check(a) {
@@ skipping 26 matching lines @@
 
 for (var i = 0; i < 3; ++i) {
   b = [0,1,2];
   loop_test(b);
   check2(b);
 }
 %OptimizeFunctionOnNextCall(loop_test);
 b = [0,1,2];
 loop_test(b);
 check2(b);