[wasm] Reduce usage of old Wasm.* API in JS tests.

test/mjsunit/wasm/instantiate-module-basic.js

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --expose-wasm
 
 load("test/mjsunit/wasm/wasm-constants.js");
 load("test/mjsunit/wasm/wasm-module-builder.js");
 
 let kReturnValue = 117;
@@ skipping 34 matching lines @@
   // Check the properties of the main function.
   let main = instance.exports.main;
   assertFalse(main === undefined);
   assertFalse(main === null);
   assertFalse(main === 0);
   assertEquals("function", typeof main);
 
   assertEquals(kReturnValue, main());
 }
 
-// Deprecated experimental API.
-CheckInstance(Wasm.instantiateModule(buffer));
-
 // Official API
 let module = new WebAssembly.Module(buffer);
 CheckInstance(new WebAssembly.Instance(module));
 
 let promise = WebAssembly.compile(buffer);
 promise.then(module => CheckInstance(new WebAssembly.Instance(module)));
 
 // Check that validate works correctly for a module.
 assertTrue(WebAssembly.validate(buffer));
 assertFalse(WebAssembly.validate(bytes(88, 88, 88, 88, 88, 88, 88, 88)));
@@ skipping 141 matching lines @@
   view_1[0] = 1;
   view_2[0] = 1000;
 
   var module = new WebAssembly.Module(builder.toBuffer());
   var i1 = new WebAssembly.Instance(module, null, mem_1);
   var i2 = new WebAssembly.Instance(module, null, mem_2);
 
   assertEquals(1, i1.exports.f());
   assertEquals(1000, i2.exports.f());
 })();