package/libmad: remove LIBMAD_LIBTOOL_PATCH=NO

Since commit eae18d01abc737182fe171c908462499d5f1aaf0 "libmad: needs
autoreconf", autoreconf builds an up to date ltmain.sh so remove
LIBMAD_LIBTOOL_PATCH = NO which is not needed anymore

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/libmad/libmad.mk

@@ -7,7 +7,6 @@
 LIBMAD_VERSION = 0.15.1b
 LIBMAD_SITE = http://downloads.sourceforge.net/project/mad/libmad/$(LIBMAD_VERSION)
 LIBMAD_INSTALL_STAGING = YES
-LIBMAD_LIBTOOL_PATCH = NO
 LIBMAD_LICENSE = GPL-2.0+
 LIBMAD_LICENSE_FILES = COPYING
 LIBMAD_PATCH = \