Remove ram_*() from README

README

@@ -62,7 +62,6 @@ Porting to OpenBSD is the current goal before thinking about a release.
 
 The following functions are not portable at the moment:
 - ipv{4,6}
-- ram_{free,perc,total,used}
 - wifi_{perc,essid}
 - cpu_{freq,perc,iowait}
 - entropy