code: @RequestMapping(value="/{providerId}", method=RequestMethod.DELETE)
  	public RedirectView removeConnections(@PathVariable String providerId, NativeWebRequest request) {
  		ConnectionFactory<?> connectionFactory = connectionFactoryLocator.getConnectionFactory(providerId);
  		preDisconnect(connectionFactory, request);
  		connectionRepository.removeConnections(providerId);
  		postDisconnect(connectionFactory, request);
  		return connectionStatusRedirect(providerId, request);
  	}
docs: Remove all provider connections for a user account.
  The user has decided they no longer wish to use the service provider from this application.
  Note: requires {@link HiddenHttpMethodFilter} to be registered with the '_method' request parameter set to 'DELETE' to convert web browser POSTs to DELETE requests.
  @param providerId the provider ID to remove the connections for
  @param request the request
  @return a RedirectView to the connection status page