[libxml2] configure.ac: Remove checks for unused programs

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 05fc6ee27cc3c3daccf67cf78d3c2aa22dc0a6cb
Author: Nick Wellnhofer <wellnhofer aevum de>
Date:   Fri Sep 2 04:45:27 2022 +0200

    configure.ac: Remove checks for unused programs

 configure.ac | 3 ---
 1 file changed, 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 6f4c21f7..a6fab769 100644
--- a/configure.ac
+++ b/configure.ac
@@ -48,12 +48,9 @@ AC_PROG_CC
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MKDIR_P
-AC_PROG_CPP
-AC_PATH_PROG(MV, mv, /bin/mv)
 AC_PATH_PROG(TAR, tar, /bin/tar)
 AC_PATH_PROG(PERL, perl, /usr/bin/perl)
 AC_PATH_PROG(WGET, wget, /usr/bin/wget)
-AC_PATH_PROG(XMLLINT, xmllint, /usr/bin/xmllint)
 AC_PATH_PROG(XSLTPROC, xsltproc, /usr/bin/xsltproc)
 PKG_PROG_PKG_CONFIG