Fixes gh-460. Remove unused variable.

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

@@ -164,8 +164,6 @@ class FeignClientsRegistrar
 		LinkedHashSet<BeanDefinition> candidateComponents = new LinkedHashSet<>();
 		Map<String, Object> attrs = metadata
 				.getAnnotationAttributes(EnableFeignClients.class.getName());
-		AnnotationTypeFilter annotationTypeFilter = new AnnotationTypeFilter(
-				FeignClient.class);
 		final Class<?>[] clients = attrs == null ? null
 				: (Class<?>[]) attrs.get("clients");
 		if (clients == null || clients.length == 0) {