To remove an annotation from a document.
CPDFDocument document = CPDFDocument.InitWithFilePath("filePath");
CPDFPage page = document.PageAtIndex(0);
List<CPDFAnnotation>annotList = page.GetAnnotations();
annotList[0].RemoveAnnot();
To remove an annotation from a document.
CPDFDocument document = CPDFDocument.InitWithFilePath("filePath");
CPDFPage page = document.PageAtIndex(0);
List<CPDFAnnotation>annotList = page.GetAnnotations();
annotList[0].RemoveAnnot();