By default, xinetd pulls in perl as a RDEPEND. As far I can see you only need perl for converting inetd.conf files to the xinetd conf format and not to be able to run xinetd. I susgest that perl is removed entirely as a RDEPEND. If you need it you could emerge perl yourself. (normally you wouldnt notice since most people have perl installed). Alternatively there could be a minimal useflag that discards the perl runtime dependency and removes the perl script. This perl dependency hurts in gentoo-embedded so please remove the RDEPEND.
bad idea good idea: make it conditional on USE=perl
added USE=perl