[gtk-doc] Remove bugzilla.py

[Sébastien Wilmet <swilmet src gnome org>]

commit df7a9651b068d62b3e71882b5297304d9adf2c2b
Author: Sébastien Wilmet <swilmet informatique-libre be>
Date:   Sat May 7 00:38:02 2022 +0200

    Remove bugzilla.py
    
    GitLab is now used for the bug tracker, no longer bugzilla.
    
    Simplify the instructions for updating the NEWS file.

 HACKING     |   4 --
 bugzilla.py | 161 ------------------------------------------------------------
 2 files changed, 165 deletions(-)
---
diff --git a/HACKING b/HACKING
index 30f43fb..bbee695 100644
--- a/HACKING
+++ b/HACKING
@@ -32,10 +32,6 @@ export GNOME_USER=...
   configure.ac meson.build
 
 - update NEWS
-  # ./bugzilla.py general ${NEW_VER} gtk-doc >RELNOTES.txt
-  git log --summary --format=short GTK_DOC_${OLD_VER_TAG}.. >ChangeLog-${NEW_VER}
-  grep "Author:" ChangeLog-${NEW_VER} | sed 's/Author:\(.*\)\ <.*>/\1/' | sort | uniq >RELNOTES.txt
-  and then copy to NEWS
 
 ```shell
 # commit