[core] remove unused forward class declarations in header files (#2587)

src/core/coap/coap.hpp

@@ -49,8 +49,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace Coap {
 
 /**

src/core/coap/coap_secure.hpp

@@ -41,8 +41,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace Coap {
 
 class CoapSecure : public CoapBase

src/core/mac/mac.hpp

@@ -50,10 +50,6 @@
 
 namespace ot {
 
-namespace Mle {
-class MleRouter;
-}
-
 /**
  * @addtogroup core-mac
  *

src/core/mac/mac_frame.hpp

@@ -47,10 +47,6 @@
 
 namespace ot {
 
-namespace Ip6 {
-class Address;
-}
-
 namespace Mac {
 
 /**

src/core/meshcop/commissioner.hpp

@@ -52,8 +52,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace MeshCoP {
 
 class Commissioner : public InstanceLocator

src/core/meshcop/dataset_manager.hpp

@@ -48,8 +48,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace MeshCoP {
 
 class DatasetManager : public InstanceLocator

src/core/meshcop/dtls.hpp

@@ -54,8 +54,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace MeshCoP {
 
 class Dtls : public InstanceLocator

src/core/meshcop/energy_scan_client.hpp

@@ -45,8 +45,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 /**
  * This class implements handling PANID Query Requests.
  *

src/core/meshcop/joiner.hpp

@@ -50,8 +50,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace MeshCoP {
 
 class Joiner : public InstanceLocator

src/core/meshcop/joiner_router.hpp

@@ -51,8 +51,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace MeshCoP {
 
 class JoinerRouter : public InstanceLocator

src/core/meshcop/panid_query_client.hpp

@@ -45,8 +45,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 /**
  * This class implements handling PANID Query Requests.
  *

src/core/net/dhcp6_client.hpp

@@ -49,11 +49,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-namespace Mle {
-class MleRouter;
-}
-
 namespace Dhcp6 {
 
 /**

src/core/net/dhcp6_server.hpp

@@ -47,11 +47,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-namespace NetworkData {
-class Leader;
-}
-
 namespace Dhcp6 {
 
 /**

src/core/thread/address_resolver.cpp

@@ -50,7 +50,6 @@
 #include "thread/mesh_forwarder.hpp"
 #include "thread/mle_router.hpp"
 #include "thread/thread_netif.hpp"
-#include "thread/thread_tlvs.hpp"
 #include "thread/thread_uri_paths.hpp"
 
 using ot::Encoding::BigEndian::HostSwap16;

src/core/thread/address_resolver.hpp

@@ -44,15 +44,10 @@
 #include "mac/mac.hpp"
 #include "net/icmp6.hpp"
 #include "net/udp6.hpp"
+#include "thread/thread_tlvs.hpp"
 
 namespace ot {
 
-class MeshForwarder;
-class ThreadLastTransactionTimeTlv;
-class ThreadMeshLocalEidTlv;
-class ThreadNetif;
-class ThreadTargetTlv;
-
 /**
  * @addtogroup core-arp
  *

src/core/thread/energy_scan_server.hpp

@@ -44,15 +44,10 @@
 #include "common/timer.hpp"
 #include "net/ip6_address.hpp"
 #include "net/udp6.hpp"
+#include "thread/thread_tlvs.hpp"
 
 namespace ot {
 
-class MeshForwarder;
-class ThreadLastTransactionTimeTlv;
-class ThreadMeshLocalEidTlv;
-class ThreadNetif;
-class ThreadTargetTlv;
-
 /**
  * This class implements handling Energy Scan Requests.
  *

src/core/thread/mesh_forwarder.hpp

@@ -56,8 +56,6 @@ enum
     kReassemblyTimeout = OPENTHREAD_CONFIG_6LOWPAN_REASSEMBLY_TIMEOUT,
 };
 
-class MleRouter;
-
 /**
  * @addtogroup core-mesh-forwarding
  *

src/core/thread/mle.hpp

@@ -50,17 +50,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-class KeyManager;
-class MeshForwarder;
-
-namespace Mac {
-class Mac;
-}
-namespace NetworkData {
-class Leader;
-}
-
 /**
  * @addtogroup core-mle MLE
  *
@@ -85,8 +74,6 @@ class Leader;
 
 namespace Mle {
 
-class MleRouter;
-
 /**
  * @addtogroup core-mle-core
  *

src/core/thread/mle_router_ftd.hpp

@@ -56,10 +56,6 @@
 namespace ot {
 namespace Mle {
 
-class AddressResolver;
-class MeshForwarder;
-class NetworkDataLeader;
-
 /**
  * @addtogroup core-mle-router
  *

src/core/thread/network_data_leader.hpp

@@ -46,8 +46,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace NetworkData {
 
 /**

src/core/thread/network_data_leader_ftd.hpp

@@ -46,8 +46,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace NetworkData {
 
 /**

src/core/thread/network_data_leader_mtd.hpp

@@ -40,8 +40,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 namespace NetworkData {
 
 class Leader : public LeaderBase

src/core/thread/network_data_local.hpp

@@ -40,8 +40,6 @@
 
 namespace ot {
 
-class ThreadNetif;
-
 /**
  * @addtogroup core-netdata-local
  *

src/core/thread/network_diagnostic.cpp

@@ -47,7 +47,6 @@
 #include "net/netif.hpp"
 #include "thread/mesh_forwarder.hpp"
 #include "thread/mle_router.hpp"
-#include "thread/network_diagnostic_tlvs.hpp"
 #include "thread/thread_netif.hpp"
 #include "thread/thread_tlvs.hpp"
 #include "thread/thread_uri_paths.hpp"

src/core/thread/network_diagnostic.hpp

@@ -41,15 +41,12 @@
 #include "coap/coap.hpp"
 #include "common/locator.hpp"
 #include "net/udp6.hpp"
+#include "thread/network_diagnostic_tlvs.hpp"
 
 namespace ot {
 
 namespace NetworkDiagnostic {
 
-class Ip6AddressListTlv;
-class ChildTableTlv;
-class NetworkDiagnosticTlv;
-
 /**
  * @addtogroup core-netdiag
  *

src/core/thread/panid_query_server.hpp

@@ -46,12 +46,6 @@
 
 namespace ot {
 
-class MeshForwarder;
-class ThreadLastTransactionTimeTlv;
-class ThreadMeshLocalEidTlv;
-class ThreadNetif;
-class ThreadTargetTlv;
-
 /**
  * This class implements handling PANID Query Requests.
  *