[wasm] Drop unused variables in asm-types-unittest.

test/unittests/wasm/asm-types-unittest.cc

 // Copyright 2016 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.
 
 #include "src/asmjs/asm-types.h"
 
 #include <unordered_map>
 #include <unordered_set>
 
 #include "src/base/macros.h"
@@ skipping 248 matching lines @@
     for (size_t jj = 0; jj < arraysize(test_types); ++jj) {
       EXPECT_EQ(ii == jj, test_types[ii]->IsExactly(test_types[jj]))
           << test_types[ii]->Name()
           << ((ii == jj) ? " is not exactly " : " is exactly ")
           << test_types[jj]->Name();
     }
   }
 }
 
 bool FunctionsWithSameSignature(AsmType* a, AsmType* b) {
-  if (auto* func_a = a->AsFunctionType()) {
-    if (auto* func_b = b->AsFunctionType()) {
+  if (a->AsFunctionType()) {
+    if (b->AsFunctionType()) {
       return a->IsA(b);
     }
   }
   return false;
 }
 
 TEST_F(AsmTypeTest, IsA) {
   Type* test_types[] = {
 #define CREATE(CamelName, string_name, number, parent_types) Type::CamelName(),
       FOR_EACH_ASM_VALUE_TYPE_LIST(CREATE)
@@ skipping 433 matching lines @@
   for (size_t ii = 0; ii < arraysize(test_types); ++ii) {
     EXPECT_EQ(StoreTypeForType(test_types[ii]), test_types[ii]->StoreType())
         << test_types[ii]->Name();
   }
 }
 
 }  // namespace
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8