refactor (JAVA HELIDON SE SERVER): remove empty line

Author: Nicklas2751

modules/openapi-generator/src/main/resources/java-helidon/server/libraries/se/model.mustache

@@ -9,12 +9,6 @@ import {{rootJavaEEPackage}}.validation.Valid;
 {{#models}}
 {{#model}}{{#isEnum}}
 {{>enumOuterClass}}{{/isEnum}}{{^isEnum}}
-{{#vendorExtensions.x-is-one-of-interface}}
-{{>oneof_interface}}
-{{/vendorExtensions.x-is-one-of-interface}}
-{{^vendorExtensions.x-is-one-of-interface}}
-{{>pojo}}
-{{/vendorExtensions.x-is-one-of-interface}}
-{{/isEnum}}
+{{#vendorExtensions.x-is-one-of-interface}}{{>oneof_interface}}{{/vendorExtensions.x-is-one-of-interface}}{{^vendorExtensions.x-is-one-of-interface}}{{>pojo}}{{/vendorExtensions.x-is-one-of-interface}}{{/isEnum}}
 {{/model}}
 {{/models}}