Remove all harmony runtime flags which shipped in M51

test/mjsunit/regexp-string-methods.js

Index: test/mjsunit/regexp-string-methods.js
diff --git a/test/mjsunit/regexp-string-methods.js b/test/mjsunit/regexp-string-methods.js
index fa01a33ce4d5e6ef4a850af71f8b4e9a50c7db66..d5ad9c33864fcfed42d7788d77928d3ec8c63133 100644
--- a/test/mjsunit/regexp-string-methods.js
+++ b/test/mjsunit/regexp-string-methods.js
@@ -25,8 +25,6 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --no-harmony-regexp-exec
-
 // Regexp shouldn't use String.prototype.slice()
 var s = new String("foo");
 assertEquals("f", s.slice(0,1));
@@ -43,11 +41,3 @@ assertEquals("g", "foo".charAt(0));
 var f2 = new RegExp("[g]", "i");
 assertEquals(["G"], f2.exec("G"));
 assertTrue(f2.ignoreCase);
-
-// On the other hand test is defined in a semi-coherent way as a call to exec.
-// 15.10.6.3
-// We match other browsers in using the original value of RegExp.prototype.exec.
-// I.e., RegExp.prototype.test shouldn't use the current value of
-// RegExp.prototype.exec.
-RegExp.prototype.exec = function(string) { return 'x'; };
-assertFalse(/f/.test('x'));