Remove remaining reference to GenericPropertiesContextLoader

See gh-28911

spring-test/src/main/java/org/springframework/test/context/SmartContextLoader.java

@@ -58,7 +58,6 @@ import org.springframework.lang.Nullable;
  * <li>{@link org.springframework.test.context.support.DelegatingSmartContextLoader DelegatingSmartContextLoader}</li>
  * <li>{@link org.springframework.test.context.support.AnnotationConfigContextLoader AnnotationConfigContextLoader}</li>
  * <li>{@link org.springframework.test.context.support.GenericXmlContextLoader GenericXmlContextLoader}</li>
- * <li>{@link org.springframework.test.context.support.GenericPropertiesContextLoader GenericPropertiesContextLoader}</li>
  * <li>{@link org.springframework.test.context.web.WebDelegatingSmartContextLoader WebDelegatingSmartContextLoader}</li>
  * <li>{@link org.springframework.test.context.web.AnnotationConfigWebContextLoader AnnotationConfigWebContextLoader}</li>
  * <li>{@link org.springframework.test.context.web.GenericXmlWebContextLoader GenericXmlWebContextLoader}</li>