Remove deprecated API use.

spring-cloud-openfeign-core/src/main/java/org/springframework/cloud/openfeign/loadbalancer/RetryableFeignBlockingLoadBalancerClient.java

@@ -248,11 +248,6 @@ public class RetryableFeignBlockingLoadBalancerClient implements Client {
 				return HttpMethod.valueOf(request.httpMethod().name());
 			}
 
-			@Override
-			public String getMethodValue() {
-				return getMethod().name();
-			}
-
 			@Override
 			public URI getURI() {
 				return URI.create(request.url());