Revert "platform: Implement set underlying networks for android"

This reverts commit eb4a184b7e.

experimental/libbox/platform.go

@@ -18,7 +18,6 @@ type PlatformInterface interface {
 	StartDefaultInterfaceMonitor(listener InterfaceUpdateListener) error
 	CloseDefaultInterfaceMonitor(listener InterfaceUpdateListener) error
 	GetInterfaces() (NetworkInterfaceIterator, error)
-	SetUnderlyingNetworks(networks RawNetworkIterator) error
 	UnderNetworkExtension() bool
 	IncludeAllNetworks() bool
 	ReadWIFIState() *WIFIState
@@ -52,8 +51,6 @@ type NetworkInterface struct {
 	Type      int32
 	DNSServer StringIterator
 	Metered   bool
-
-	RawNetwork RawNetwork
 }
 
 type WIFIState struct {
@@ -70,11 +67,6 @@ type NetworkInterfaceIterator interface {
 	HasNext() bool
 }
 
-type RawNetworkIterator interface {
-	Next() RawNetwork
-	HasNext() bool
-}
-
 type Notification struct {
 	Identifier string
 	TypeName   string