Removes setting FactoryBean.OBJECT_TYPE_ATTRIBUTE

It was previously ignored, changing it to a class introduces behaviour that breaks aot.

This is required by a6ff95a69c

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

@@ -248,8 +248,6 @@ class FeignClientsRegistrar implements ImportBeanDefinitionRegistrar, ResourceLo
 		// code
 		definition.addPropertyValue("qualifiers", qualifiers);
 		AbstractBeanDefinition beanDefinition = definition.getBeanDefinition();
-		Class<?> type = ClassUtils.resolveClassName(className, null);
-		beanDefinition.setAttribute(FactoryBean.OBJECT_TYPE_ATTRIBUTE, type);
 		// has a default, won't be null
 		boolean primary = (Boolean) attributes.get("primary");
 		beanDefinition.setPrimary(primary);