[gtk-doc] Remove MAINTAINERS file, there is already the *.doap file

[Sébastien Wilmet <swilmet src gnome org>]

commit 65a9e6216d45c7af6607cb028387339ea7c5fc80
Author: Sébastien Wilmet <swilmet informatique-libre be>
Date:   Fri May 6 23:28:53 2022 +0200

    Remove MAINTAINERS file, there is already the *.doap file
    
    See https://wiki.gnome.org/MaintainersCorner
    
    The paragraph at the end is not super useful, it can be dropped.

 MAINTAINERS | 22 ----------------------
 Makefile.am |  1 -
 2 files changed, 23 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index c383e85..bb68852 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -54,7 +54,6 @@ pkgconfigdir = $(datadir)/pkgconfig
 pkgconfig_DATA = gtk-doc.pc
 
 EXTRA_DIST = \
-       MAINTAINERS     \
        $(gtkdocdata_DATA) \
        $(pylibdata_DATA) \
        autogen.sh \