[gtk-doc] gtk-doc-single.xsl: remove never finished feature

[Stefan Sauer <stefkost src gnome org>]

commit 832aa722811339d2f7c3643ab842fd2ebf293e42
Author: Stefan Sauer <ensonic users sf net>
Date:   Sun May 20 22:28:32 2018 +0200

    gtk-doc-single.xsl: remove never finished feature
    
    The bug was closed WONTFIX already.

 TODO               |   10 +-
 gtk-doc-single.xsl |  545 ----------------------------------------------------
 2 files changed, 1 insertions(+), 554 deletions(-)
---
diff --git a/TODO b/TODO
index 7504973..b1a35fe 100644
--- a/TODO
+++ b/TODO
@@ -121,23 +121,15 @@ libs can benefit from the extensions too.
   * would be good to be able to have page titles as a concatenation of document
     name and page name (gtk+:GtkWIdget)
 * formats
-  http://bugzilla.gnome.org/show_bug.cgi?id=531572 : html-single
   http://bugzilla.gnome.org/show_bug.cgi?id=466535 : pdf
   http://bugzilla.gnome.org/show_bug.cgi?id=467488 : man
   we need more configure options in gtk-doc.m4:
-  --(enable|disable)-gtk-doc-(html|pdf|man|html-single|rtf)
+  --(enable|disable)-gtk-doc-(html|pdf|man)
   - html : enabled by default
-  - html-single : is single page html
 * validation
     xmllint --noout --xinclude --postvalid tester-docs.xml
     xmllint --noout --postvalid tester-docs.fo --dtdvalid file://$HOME/download/fo.dtd
     - fo.dtd : http://www.renderx.com/Tests/validator/fo.zip
-* single page
-  xsltproc  --nonet --xinclude -o gtk-docs.html /home/ensonic/projects/gtk-doc/gtk-doc-single.xsl  
gtk-docs.sgml
-  * need to check if we can pass the style-sheet class as a parameter (--stringparam 
gtkdoc.stylesheet=(chunk|docbook))
-  * we might also need to reflow some things, as gtk-doc.xsl also runs the devhelp/devhelp2 generation
-    - but then the urls in the devhelp file, refer to the chunked html anyway
-
 
 = Warnings =
 Bugzilla has some requests for extra warnings. We should support a common