Revert of Replace all remaining Oddball checks with new function

src/wasm/wasm-module.cc

Index: src/wasm/wasm-module.cc
diff --git a/src/wasm/wasm-module.cc b/src/wasm/wasm-module.cc
index 39421ab6515a09bd8df3edf0f63126ca7d0feafa..8ad95c8c1efd04cff6b9c0606be83bd0d2e63582 100644
--- a/src/wasm/wasm-module.cc
+++ b/src/wasm/wasm-module.cc
@@ -984,7 +984,7 @@
 
 Handle<Object> GetWasmFunctionNameOrNull(Isolate* isolate, Handle<Object> wasm,
                                          uint32_t func_index) {
-  if (!wasm->IsUndefined(isolate)) {
+  if (!wasm->IsUndefined()) {
     Handle<ByteArray> func_names_arr_obj(
         ByteArray::cast(Handle<JSObject>::cast(wasm)->GetInternalField(
             kWasmFunctionNamesArray)),
@@ -1004,9 +1004,7 @@
                                    uint32_t func_index) {
   Handle<Object> name_or_null =
       GetWasmFunctionNameOrNull(isolate, wasm, func_index);
-  if (!name_or_null->IsNull(isolate)) {
-    return Handle<String>::cast(name_or_null);
-  }
+  if (!name_or_null->IsNull()) return Handle<String>::cast(name_or_null);
   return isolate->factory()->NewStringFromStaticChars("<WASM UNNAMED>");
 }