app-crypt/mit-krb5: delete local lib code to guarantee system usage

These libs are already pulled from the system, but delete the source
just to guarantee we don't accidentally regress in the future.

app-crypt/mit-krb5/mit-krb5-1.14.4.ebuild

@@ -59,6 +59,10 @@ src_prepare() {
 	epatch "${FILESDIR}/${PN}-1.12_warn_cflags.patch"
 	epatch "${FILESDIR}/${PN}-config_LDFLAGS.patch"
 
+	# Make sure we always use the system copies.
+	rm -rf util/{et,ss,verto}
+	sed -i 's:^[[:space:]]*util/verto$::' configure.in || die
+
 	eautoreconf
 }