PDFBOX-6009: remove uneeded code

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1925860 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

pdfbox/src/main/java/org/apache/pdfbox/multipdf/Splitter.java

@@ -134,7 +134,6 @@ public List<PDDocument> split(PDDocument document) throws IOException
         pageDictMaps = new ArrayList<>();
         annotDictMaps = new ArrayList<>();
         destToFixMap = new HashMap<>();
-        annotDictMap = new HashMap<>();
         idSet = new HashSet<>();
         roleSet = new HashSet<>();