[mjsunit] Remove unsupported flag --turbo-deoptimization from tests.

test/mjsunit/regress/regress-crbug-489293.js

Index: test/mjsunit/regress/regress-crbug-489293.js
diff --git a/test/mjsunit/regress/regress-crbug-489293.js b/test/mjsunit/regress/regress-crbug-489293.js
index 38d58e72386951958e7e677e66be0446a427153f..bcfc702df3242265e21f78df62d212814a06c83d 100644
--- a/test/mjsunit/regress/regress-crbug-489293.js
+++ b/test/mjsunit/regress/regress-crbug-489293.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --turbo-filter=f --turbo-deoptimization
+// Flags: --allow-natives-syntax --turbo-filter=f
 // Flags: --noanalyze-environment-liveness
 
 function f() {