Remove old tests that have been migrated to the v8 repo.

LayoutTests/fast/js/script-tests/object-prototype-properties.js

-description(
-'This is a test case for <a https://bugs.webkit.org/show_bug.cgi?id=64678">bug 64678</a>.'
-);
-
-//ES 5.1 allows for Object.prototype.toString being called with undefined/null.
-shouldBe("Object.prototype.toString.call(undefined)", '"[object Undefined]"');
-shouldBe("Object.prototype.toString.call(null)", '"[object Null]"');
-
-// These calls pass undefined as this value, and as such should throw in toObject.
-shouldThrow("Object.prototype.toLocaleString.call(undefined)");
-shouldThrow("Object.prototype.valueOf.call(undefined)");
-shouldThrow("Object.prototype.hasOwnProperty.call(undefined, 'hasOwnProperty')");
-shouldThrow("Object.prototype.propertyIsEnumerable.call(undefined, 'propertyIsEnumerable')");
-shouldThrow("Object.prototype.isPrototypeOf.call(undefined, this)");