message: Remove unused internal helper method from KeyVaultPipeline.
diff: @@ -186,13 +186,5 @@ namespace Azure { namespace Security { namespace KeyVault { namespace _internal
  // Use the core pipeline directly to avoid checking the response code.
  return m_pipeline.Send(request, context);
  }
  -
  - /**
  - * @brief Get the Vault Url which was used to create the
  - * #Azure::Security::KeyVault::_internal::KeyVaultPipeline.
  - *
  - * @return The vault Url as string.
  - */
  - std::string GetVaultUrl() const { return m_vaultUrl.GetAbsoluteUrl(); }
  };
  }}}} // namespace Azure::Security::KeyVault::_internal
  