Revert of [wasm] Refactor import handling for 0xC.

test/mjsunit/wasm/import-table.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");
 
 function testCallImport(func, check) {
@@ skipping 248 matching lines @@
   }
 }
 
 testCallPrint();
 testCallPrint();
 
 
 function testCallImport2(foo, bar, expected) {
   var builder = new WasmModuleBuilder();
 
-  builder.addImport("foo", kSig_i_v);
-  builder.addImport("bar", kSig_i_v);
-  builder.addFunction("main", kSig_i_v)
+  builder.addImport("foo", kSig_i);
+  builder.addImport("bar", kSig_i);
+  builder.addFunction("main", kSig_i)
     .addBody([
       kExprCallFunction, 0, // --
       kExprCallFunction, 1, // --
       kExprI32Add,                 // --
     ])                             // --
     .exportFunc();
 
   var main = builder.instantiate({foo: foo, bar: bar}).exports.main;
   assertEquals(expected, main());
 }
 
 testCallImport2(function() { return 33; }, function () { return 44; }, 77);