Revert "dictionary and deltadictionary - one cleanup and one fix where i forgot to keep a null check"

This reverts commit e6a2197781.

sku.0/sys.server/compiled/game/script/deltadictionary.java

@@ -69,13 +69,6 @@ public final class deltadictionary
 				return null;
 			}
 
-			if (v.get(0) == null)
-			{
-				System.err.println("WARNING: deltadictionary.put passed vector with null data");
-				Thread.dumpStack();
-				return null;
-			}
-
 			value = v.toArray();
 		}
 		return currentValue.put(key, value);