src: remove duplicate code setting AF_INET

`AF_INET` has been repeatedly set three times in the code. this should
be redundant. removed the last two times.

PR-URL: #54939
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

src/cares_wrap.cc

@@ -1935,16 +1935,6 @@ void Initialize(Local<Object> target,
             FIXED_ONE_BYTE_STRING(env->isolate(), "DNS_ORDER_IPV6_FIRST"),
             Integer::New(env->isolate(), DNS_ORDER_IPV6_FIRST))
       .Check();
-  target
-      ->Set(env->context(),
-            FIXED_ONE_BYTE_STRING(env->isolate(), "AF_INET"),
-            Integer::New(env->isolate(), AF_INET))
-      .Check();
-  target
-      ->Set(env->context(),
-            FIXED_ONE_BYTE_STRING(env->isolate(), "AF_INET"),
-            Integer::New(env->isolate(), AF_INET))
-      .Check();
 
   Local<FunctionTemplate> aiw =
       BaseObject::MakeLazilyInitializedJSTemplate(env);