Revert "Apply DomainStrategy to outbound target"

This reverts commit ce7dc23.

Until implementation of `PreferIPv4` and `PreferIPv6`. See v2fly#2553

app/proxyman/outbound/handler.go

@@ -151,18 +151,6 @@ func (h *Handler) Tag() string {
 
 // Dispatch implements proxy.Outbound.Dispatch.
 func (h *Handler) Dispatch(ctx context.Context, link *transport.Link) {
-	if h.senderSettings != nil && h.senderSettings.DomainStrategy != proxyman.SenderConfig_AS_IS {
-		outbound := session.OutboundFromContext(ctx)
-		if outbound == nil {
-			outbound = new(session.Outbound)
-			ctx = session.ContextWithOutbound(ctx, outbound)
-		}
-		if outbound.Target.Address != nil && outbound.Target.Address.Family().IsDomain() {
-			if addr := h.resolveIP(ctx, outbound.Target.Address.Domain(), h.Address()); addr != nil {
-				outbound.Target.Address = addr
-			}
-		}
-	}
 	if h.mux != nil && (h.mux.Enabled || session.MuxPreferedFromContext(ctx)) {
 		if err := h.mux.Dispatch(ctx, link); err != nil {
 			err := newError("failed to process mux outbound traffic").Base(err)