[libxml2] python/Makefile.am: rely on global AM_INIT_AUTOMAKE

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 9e3043535871a9bea1bd9499c2eff872140a338a
Author: David Seifert <soap gentoo org>
Date:   Wed Mar 30 16:51:14 2022 +0200

    python/Makefile.am: rely on global AM_INIT_AUTOMAKE
    
    * Even Debian oldoldstable has Automake 1.15 available nowadays.

 configure.ac       | 2 +-
 python/Makefile.am | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4a901999..0baf0e7f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -40,7 +40,7 @@ AC_SUBST(LIBXML_VERSION_EXTRA)
 
 VERSION=${LIBXML_VERSION}
 
-AM_INIT_AUTOMAKE([foreign])
+AM_INIT_AUTOMAKE([1.15 foreign])
 
 # Support silent build rules, requires at least automake-1.11. Disable
 # by either passing --disable-silent-rules to configure or passing V=1
diff --git a/python/Makefile.am b/python/Makefile.am
index bf8cabba..3bb34c52 100644
--- a/python/Makefile.am
+++ b/python/Makefile.am
@@ -1,5 +1,4 @@
 # Makefile for libxml2 python library
-AUTOMAKE_OPTIONS = 1.4 foreign
 
 SUBDIRS = . tests