fix checkstyle error

ileler · ileler · commit c9815665baa7 · 2019-08-05T21:50:07.000+08:00
diff --git a/springfox-swagger-common/src/main/java/springfox/documentation/swagger/readers/operation/OperationImplicitParametersReader.java b/springfox-swagger-common/src/main/java/springfox/documentation/swagger/readers/operation/OperationImplicitParametersReader.java
@@ -34,7 +34,6 @@
 
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Optional;
 
 import static springfox.documentation.swagger.common.SwaggerPluginSupport.*;
 
