[gtk/wip/muktupavels/remove-nonet] docs: remove xsltproc nonet flag

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 572e1738d6167892f22f6939ae9313c492bd3766
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Thu Feb 13 21:08:11 2020 +0200

    docs: remove xsltproc nonet flag
    
    This seems to cause msys2-mingw32-meson build failure:
    FAILED: docs/reference/gtk/gtk-query-immodules-3.0.1
    "C:/msys64/mingw32/bin/xsltproc.EXE" "--nonet" "--stringparam" "man.output.quietly" "1" "--stringparam" 
"funcsynopsis.style" "ansi" "--stringparam" "man.th.extra1.suppress" "1" "--stringparam" 
"man.authors.section.enabled" "0" "--stringparam" "man.copyright.section.enabled" "0" "-o" 
"docs/reference/gtk/gtk-query-immodules-3.0.1" 
"http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"; 
"../docs/reference/gtk/gtk-query-immodules-3.0.xml"
    I/O error : Attempt to load network entity 
http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
    warning: failed to load external entity 
"http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl";
    cannot parse http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl

 docs/reference/gtk/Makefile.am | 1 -
 docs/reference/gtk/meson.build | 1 -
 2 files changed, 2 deletions(-)
---
diff --git a/docs/reference/gtk/Makefile.am b/docs/reference/gtk/Makefile.am
index fabfbcd931..24cffd6d5e 100644
--- a/docs/reference/gtk/Makefile.am
+++ b/docs/reference/gtk/Makefile.am
@@ -515,7 +515,6 @@ man_MANS =                          \
 if ENABLE_MAN
 
 XSLTPROC_FLAGS = \
-        --nonet \
         --stringparam man.output.quietly 1 \
         --stringparam funcsynopsis.style ansi \
         --stringparam man.th.extra1.suppress 1 \
diff --git a/docs/reference/gtk/meson.build b/docs/reference/gtk/meson.build
index d3f55b442c..138ebdbc82 100644
--- a/docs/reference/gtk/meson.build
+++ b/docs/reference/gtk/meson.build
@@ -490,7 +490,6 @@ endif
 
 if get_option('man') and xsltproc.found()
   xlstproc_flags = [
-    '--nonet',
     '--stringparam', 'man.output.quietly', '1',
     '--stringparam', 'funcsynopsis.style', 'ansi',
     '--stringparam', 'man.th.extra1.suppress', '1',