NetworkPkg/IScsiDxe: Use UEFILib APIs to uninstall protocols.

During cleanup in case of initialization failure, some driver
bindings are not installed. Using abstractions in UEFILib takes
care of it.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1428

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ashish Singhal <ashishsingha@nvidia.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>

NetworkPkg/IScsiDxe/IScsiDriver.c

@@ -1,6 +1,7 @@
 /** @file
   The entry point of IScsi driver.
 
+Copyright (c) 2019, NVIDIA Corporation. All rights reserved.
 Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
 (C) Copyright 2017 Hewlett Packard Enterprise Development LP<BR>
 
@@ -1861,27 +1862,17 @@ Error3:
          );
 
 Error2:
-  gBS->UninstallMultipleProtocolInterfaces (
-         gIScsiIp6DriverBinding.DriverBindingHandle,
-         &gEfiDriverBindingProtocolGuid,
+  EfiLibUninstallDriverBindingComponentName2 (
     &gIScsiIp6DriverBinding,
-         &gEfiComponentName2ProtocolGuid,
-         &gIScsiComponentName2,
-         &gEfiComponentNameProtocolGuid,
     &gIScsiComponentName,
-         NULL
+    &gIScsiComponentName2
     );
 
 Error1:
-  gBS->UninstallMultipleProtocolInterfaces (
-         ImageHandle,
-         &gEfiDriverBindingProtocolGuid,
+  EfiLibUninstallDriverBindingComponentName2 (
     &gIScsiIp4DriverBinding,
-         &gEfiComponentName2ProtocolGuid,
-         &gIScsiComponentName2,
-         &gEfiComponentNameProtocolGuid,
     &gIScsiComponentName,
-         NULL
+    &gIScsiComponentName2
     );
 
   return Status;