HC2VPP-379: move NAT validation code out of customizers

Use Validator interface introduced by HONEYCOMB-431:
https://gerrit.fd.io/r/#/c/14022/

Change-Id: I9e4c8d59f299ed7da4a93bbdc70c81f2bea93606
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/NatInstaceCustomizer.java b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/NatInstaceCustomizer.java
index 90caa7c76..945a5fa58 100644
--- a/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/NatInstaceCustomizer.java
+++ b/nat/nat2vpp/src/main/java/io/fd/hc2vpp/nat/write/NatInstaceCustomizer.java
@@ -42,12 +42,5 @@ final class NatInstaceCustomizer implements ListWriterCustomizer<Instance, Insta
                                         @Nonnull final Instance dataBefore, @Nonnull final WriteContext writeContext)
             throws WriteFailedException {
         LOG.trace("Deleting NAT instance: {}", id);
-
-        // For consistency with reader, forbid removing default NAT instance:
-        final Long vrfId = id.firstKeyOf(Instance.class).getId();
-        if (vrfId == 0) {
-            throw new WriteFailedException.DeleteFailedException(id,
-                new UnsupportedOperationException("Removing default NAT instance (vrf=0) is not supported."));
-        }
     }
 }