Remove tests that allow `...{` in object destructuring. Ref gh-1050

Signed-off-by: Rick Waldron <waldron.rick@gmail.com>

src/dstr-binding/obj-ptrn-rest-nested-obj.case

-// Copyright (C) 2017 Caio Lima. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-desc: >
-    When DestructuringAssignmentTarget is an object literal, it should be parsed
-    parsed as a DestructuringAssignmentPattern and evaluated as a destructuring
-    assignment.
-template: default
-esid: pending
-features: [object-rest]
----*/
-
-//- setup
-var obj = {a: 3, b: 4};
-//- elems
-{a, b, ...{c, e}}
-//- vals
-{a: 1, b: 2, c: 3, d: 4, e: 5}
-//- body
-assert.sameValue(a, 1);
-assert.sameValue(b, 2);
-assert.sameValue(c, 3);
-assert.sameValue(e, 5);
-

src/dstr-binding/obj-ptrn-rest-obj-nested-rest.case

-// Copyright (C) 2017 Caio Lima. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-desc: >
-    When DestructuringAssignmentTarget is an object literal, it should be parsed
-    parsed as a DestructuringAssignmentPattern and evaluated as a destructuring
-    assignment and object rest desconstruction is allowed in that case.
-template: default
-esid: pending
-includes: [propertyHelper.js]
-features: [object-rest]
----*/
-
-//- elems
-{a, b, ...{c, ...rest}}
-//- vals
-{a: 1, b: 2, c: 3, d: 4, e: 5}
-//- body
-assert.sameValue(a, 1);
-assert.sameValue(b, 2);
-assert.sameValue(c, 3);
-
-assert.sameValue(rest.d, 4);
-assert.sameValue(rest.e, 5);
-
-verifyEnumerable(rest, "d");
-verifyWritable(rest, "d");
-verifyConfigurable(rest, "d");
-
-verifyEnumerable(rest, "e");
-verifyWritable(rest, "e");
-verifyConfigurable(rest, "e");
-

src/dstr-binding/obj-ptrn-rest-obj-own-property.case

-// Copyright (C) 2017 Caio Lima. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-desc: >
-    Rest object contains just soruce object's own properties
-template: default
-esid: pending
-includes: [propertyHelper.js]
-features: [object-rest]
----*/
-
-//- setup
-var o = Object.create({ x: 1, y: 2 });
-o.z = 3;
-//- elems
-{ x, ...{y , z} }
-//- vals
-o
-//- body
-assert.sameValue(x, 1);
-assert.sameValue(y, undefined);
-assert.sameValue(z, 3);
-