package/x11r7/xlib_libXft: remove autoreconf

package/x11r7/xlib_libXft: remove autoreconf

Nine years ago we added autoreconf to fix libtool-related problems
with the matchbox package:

https://git.buildroot.net/buildroot/commit/?id=51ef5b81224c243aa7f937c4690b1a120c81ccbc

After building this defconfig with autoreconf removed from this package

BR2_x86_64=y
BR2_x86_core_avx2=y
BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_PACKAGE_XORG7=y
BR2_PACKAGE_XLIB_LIBXFONT=y
BR2_PACKAGE_MATCHBOX=y
BR2_PACKAGE_MATCHBOX_SM=y
BR2_PACKAGE_MATCHBOX_COMMON=y
BR2_PACKAGE_MATCHBOX_COMMON_PDA=y
BR2_PACKAGE_MATCHBOX_DESKTOP=y
BR2_PACKAGE_MATCHBOX_KEYBOARD=y
BR2_PACKAGE_MATCHBOX_PANEL=y
BR2_PACKAGE_MATCHBOX_STARTUP_MONITOR=y

it is obvious that the problem which existed nine years ago seems to be
gone, therefore we remove autoreconf from this package because there is
no need for it anymore.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>