rpm: Fix FILES_${PN}

In a recent commit, the FILES expression for rpm accidentally moved a large portion of rpm-build into rpm:

http://git.yoctoproject.org/cgit.cgi/poky/commit/?id=2e557556e03f4e86795cf331ccf06acd4c373045

Since rpm-build requires perl, this caused a number of build failures when the rpm-build package was attempted to be used since it references /usr/bin/perl. This commit restores the previous contents of the rpm package.

---

index 9699639..5498541 100644
@@ -224,7 +224,6 @@ FILES_${PN} =  "${bindir}/rpm \
 		${libdir}/rpm/bin/rpmrepo \
 		${libdir}/rpm/bin/rpmspecdump \
 		${libdir}/rpm/bin/wget \
-		${libdir}/rpm \
 		${localstatedir}/cache \
 		${localstatedir}/cache/rpm \
 		${localstatedir}/cache/wdj \