readline: partially revert dc28039bcfebfa803e5111a8461a0c498aa39219.

With ojab's patch this is unneeded.

srcpkgs/readline/template

@@ -35,9 +35,4 @@ pre_configure() {
 			msg_normal " Applying patch readline62-$p.\n"
 	done
 	sed -i 's|-Wl,-rpath,$(libdir) ||g' support/shobj-conf
-	sed -i 's,@INSTALL_DATA@,install -m755,' shlib/Makefile.in
-}
-
-post_install() {
-	chmod 755 ${DESTDIR}/usr/lib/*.so*
 }