tk: drop unnecessary cross workarounds.

srcpkgs/tk/template

@@ -1,7 +1,7 @@
 # Template file for 'tk'
 pkgname=tk
 version=8.6.4
-revision=1
+revision=2
 wrksrc="tk${version}"
 build_wrksrc="unix"
 build_style=gnu-configure
@@ -19,12 +19,6 @@ checksum=08f99df85e5dc9c4271762163c6aabb962c8b297dc5c4c1af8bdd05fc2dd26c1
 
 shlib_provides="libtk${version%.*}.so"
 
-pre_build() {
-	if [ "$CROSS_BUILD" ]; then
-		# XXX
-		sed -e "s,-L/usr/lib,-L$XBPS_CROSS_BASE/usr/lib,g" -i Makefile
-	fi
-}
 do_install() {
 	make INSTALL_ROOT=${DESTDIR} install install-private-headers
 	ln -s wish${version%.*} ${DESTDIR}/usr/bin/wish