https://{site}.com/wp-json/wp/v2/posts/{id}
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
headers.add("Authorization","Bearer "+token);
String urlToUse=UriComponentsBuilder.fromHttpUrl(deleteposturl).buildAndExpand(site,Id).toString();
HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(null, headers);
RestTemplate restTemplate = new RestTemplate();
response = restTemplate.delete( urlToUse, request );