Speed up test/mjsunit/greedy.js

Review URL: https://codereview.chromium.org/10969062

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12587 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/greedy.js

@@ -25,7 +25,7 @@
 // (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: --gc-greedy
+// Flags: --gc-greedy --noverify-heap
 
 function IterativeFib(n) {
   var f0 = 0, f1 = 1;