Drop now unneeded FILESDIR and S variables from various recipes

meta/packages/jpeg/jpeg-native_6b.bb

@@ -1,7 +1,6 @@
 SECTION = "libs"
 require jpeg_${PV}.bb
 inherit native
-FILESDIR = "${@os.path.dirname(bb.data.getVar('FILE',d,1))}/jpeg-${PV}"
 DEPENDS = ""
 
 do_stage() {

meta/packages/jpeg/jpeg_6b.bb

@@ -12,7 +12,6 @@ SRC_URI = "http://www.ijg.org/files/jpegsrc.v${PV}.tar.gz \
 	   file://ldflags.patch;patch=1 \
 	   file://paths.patch;patch=1 \
 	   file://libtool_tweak.patch;patch=1"
-S = "${WORKDIR}/jpeg-${PV}"
 
 inherit autotools