Fix cubic finding

Author: jpfinne

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

@@ -2115,7 +2115,7 @@ public String removeAnnotationsWithExclusion(String dataType, String annotationT
                 return dataType.replaceAll("(?:(?i)@[a-z0-9\\.]*+([(].*[)]|\\s*))*+", "");
             }
             annotationToKeep += " ";
-            boolean annotationPresent = annotationToKeep != null && dataType.indexOf(annotationToKeep) >=0;
+            boolean annotationPresent = dataType.indexOf(annotationToKeep) >=0;
             if (annotationPresent) {
                 dataType = dataType.replace( annotationToKeep, "%%");
             }