message: Remove unneded "VERSION" constant.
diff: @@ -58,8 +58,6 @@ class EcdsaSignKeyManager extends PrivateKeyTypeManager<EcdsaPrivateKey, EcdsaPu
  });
  }
  - private static final int VERSION = 0;
  -
  @Override
  public String getKeyType() {
  return "type.googleapis.com/google.crypto.tink.EcdsaPrivateKey";
  @@ -67,7 +65,7 @@ class EcdsaSignKeyManager extends PrivateKeyTypeManager<EcdsaPrivateKey, EcdsaPu
  @Override
  public int getVersion() {
  - return VERSION;
  + return 0;
  }
  @Override
  @@ -118,7 +116,7 @@ class EcdsaSignKeyManager extends PrivateKeyTypeManager<EcdsaPrivateKey, EcdsaPu
  // Creates EcdsaPublicKey.
  EcdsaPublicKey ecdsaPubKey =
  EcdsaPublicKey.newBuilder()
  - .setVersion(VERSION)
  + .setVersion(getVersion())
  .setParams(ecdsaParams)
  .setX(ByteString.copyFrom(w.getAffineX().toByteArray()))
  .setY(ByteString.copyFrom(w.getAffineY().toByteArray()))
  @@ -126,7 +124,7 @@ class EcdsaSignKeyManager extends PrivateKeyTypeManager<EcdsaPrivateKey, EcdsaPu
  // Creates EcdsaPrivateKey.
  return EcdsaPrivateKey.newBuilder()
  - .setVersion(VERSION)
  + .setVersion(getVersion())
  .setPublicKey(ecdsaPubKey)
  .setKeyValue(ByteString.copyFrom(privKey.getS().toByteArray()))
  .build();
  