[ghex] Remove Jonathon Jongsma as a maintainer.

[Logan Rathbone <larathbone src gnome org>]

commit 3d41c7256d2fccf4c2ace883617c4d2e57d8572a
Author: Logan Rathbone <poprocks gmail com>
Date:   Thu Aug 12 16:54:11 2021 -0400

    Remove Jonathon Jongsma as a maintainer.
    
    He advised by email dated 1 January 2021 that he no longer considers
    himself a maintainer of ghex.

 ghex.doap | 7 -------
 1 file changed, 7 deletions(-)
---
diff --git a/ghex.doap b/ghex.doap
index 8d04b6cf..d1fba76a 100644
--- a/ghex.doap
+++ b/ghex.doap
@@ -20,13 +20,6 @@ A useful tool for working with raw data.</description>
   <category rdf:resource="http://api.gnome.org/doap-extensions#apps"; />
   <programming-language>C</programming-language>
 
-  <maintainer>
-    <foaf:Person>
-      <foaf:name>Jonathon Jongsma</foaf:name>
-      <foaf:mbox rdf:resource="mailto:jonathon quotidian org" />
-      <gnome:userid>jjongsma</gnome:userid>
-    </foaf:Person>
-  </maintainer>
   <maintainer>
     <foaf:Person>
       <foaf:name>Kalev Lember</foaf:name>