Drop now unneeded FILESDIR and S variables from various recipes

meta/packages/libtool/libtool-native_2.2.6.bb

@@ -2,12 +2,9 @@ require libtool.inc
 require libtool_${PV}.bb
 
 PR = "r19"
-FILESDIR = "${@os.path.dirname(bb.data.getVar('FILE',d,1))}/libtool-${PV}"
 SRC_URI_append = " file://cross_compile.patch;patch=1 \
                    file://prefix.patch;patch=1"
 
-S = "${WORKDIR}/libtool-${PV}"
-
 inherit native
 
 do_configure_prepend () {