Revert "package/pkg-autotools: use /run as runtime path"

This reverts commit 505b5a6cdd337c2fd5965aa875a1a53419d62ed1.

This broke packages using older autoconf versions (--runstatedir was added
in 2.69b).

Fixes:
     - http://autobuild.buildroot.org/results/c853f14773d875be30e32ae24daf80e181fef34e
     - http://autobuild.buildroot.org/results/045211cd66cf78c3d89d2d8ac41ec4edf0b0ee58
     - http://autobuild.buildroot.org/results/8c5160eef99de2f1f72f33d5e5ea94d417855b2c

Acked-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/pkg-autotools.mk

@@ -187,7 +187,6 @@ define $(2)_CONFIGURE_CMDS
 		--exec-prefix=/usr \
 		--sysconfdir=/etc \
 		--localstatedir=/var \
-		--runstatedir=/run \
 		--program-prefix="" \
 		--disable-gtk-doc \
 		--disable-gtk-doc-html \