revert change

Author: Picazsoo

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinSpringServerCodegen.java

@@ -832,7 +832,7 @@ protected ImmutableMap.Builder<String, Lambda> addMustacheLambdas() {
 
     @Override
     public void addOperationToGroup(String tag, String resourcePath, Operation operation, CodegenOperation co, Map<String, List<CodegenOperation>> operations) {
-        if ((library.equals(SPRING_BOOT) || library.equals(SPRING_DECLARATIVE_HTTP_INTERFACE_LIBRARY)) && !useTags) {
+        if (library.equals(SPRING_BOOT) && !useTags) {
             String basePath = resourcePath;
             if (basePath.startsWith("/")) {
                 basePath = basePath.substring(1);