MDL-8226 Move aon & aiken import format from head into contrib. No longer maintained. Use GIFT instead.

lang/en_utf8/help/quiz/import.html

@@ -39,22 +39,6 @@ When was Ulysses S. Grant born?{#1822}
 <p align="right"><a href="help.php?file=formatgift.html&module=quiz">More info about the "GIFT" format</a></p>
 </ul>
 
-<p><b>Aiken format</b></p>
-<ul>
-<p>The Aiken format is a very simple way of creating multiple choice questions using a very clear human-readable format. Here is an example of the format:</p>
-<pre>
-What is the purpose of first aid?
-A. To save life, prevent further injury, preserve good health
-B. To provide medical treatment to any injured or wounded person
-C. To prevent further injury
-D. To aid victims who may be seeking help
-ANSWER: A
-</pre>
-
-<p align="right"><a href="help.php?file=formataiken.html&module=quiz">More info about the "Aiken" format</a></p>
-</ul>
-
-
 <p><b>Missing Word</b></p>
 <ul>
 <p>This format only supports multiple choice questions and
@@ -80,19 +64,6 @@ we become students of {=anatomy and physiology ~reflexology
 <p align="right"><a href="help.php?file=formatmissingword.html&module=quiz">More info about the "Missing Word" format</a></p>
 </ul>
 
-
-<p><b>AON</b></p>
-<ul>
-<p>This is the same as Missing Word Format, except that after importing 
-   the questions all Short-Answer questions are converted four at a time
-   into Matching Questions.</p>
-<p>Additionally, the answers of multiple-choice questions are randomly 
-   shuffled during the import.</p>
-<p>It's named after an organisation that sponsored the development of many 
-   quiz features</p>
-</ul>
-
-
 <p><b>Blackboard</b></p>
 <ul>
 <p>This module can import questions saved in Blackboard's export