chromeos: Remove unused CrosAddIPConfig/CrosRemoveIPConfig functions

chromeos/dbus/shill_device_client.cc

Index: chromeos/dbus/shill_device_client.cc
diff --git a/chromeos/dbus/shill_device_client.cc b/chromeos/dbus/shill_device_client.cc
index 077c3fb36df65f5836f0ff2a9f367e9038b94a54..2f23db70a7273c8204703fee5cabca23c8625751 100644
--- a/chromeos/dbus/shill_device_client.cc
+++ b/chromeos/dbus/shill_device_client.cc
@@ -100,16 +100,6 @@ class ShillDeviceClientImpl : public ShillDeviceClient {
     GetHelper(device_path)->CallObjectPathMethod(&method_call, callback);
   }
 
-  virtual dbus::ObjectPath CallAddIPConfigAndBlock(
-      const dbus::ObjectPath& device_path,
-      const std::string& method) OVERRIDE {
-    dbus::MethodCall method_call(flimflam::kFlimflamDeviceInterface,
-                                 flimflam::kAddIPConfigFunction);
-    dbus::MessageWriter writer(&method_call);
-    writer.AppendString(method);
-    return GetHelper(device_path)->CallObjectPathMethodAndBlock(&method_call);
-  }
-
   virtual void RequirePin(const dbus::ObjectPath& device_path,
                           const std::string& pin,
                           bool require,
@@ -312,12 +302,6 @@ class ShillDeviceClientStubImpl : public ShillDeviceClient,
                                                 dbus::ObjectPath()));
   }
 
-  virtual dbus::ObjectPath CallAddIPConfigAndBlock(
-      const dbus::ObjectPath& device_path,
-      const std::string& method) OVERRIDE {
-    return dbus::ObjectPath();
-  }
-
   virtual void RequirePin(const dbus::ObjectPath& device_path,
                           const std::string& pin,
                           bool require,