[master] trivial cleanup: removed comments that don't make sense any more.

should be trivial, so directly committing.

tests/tools/Makefile.am

@@ -1,5 +1 @@
-# perfdhcp uses getifaddrs, which is not a standard library and is not
-# portable (at least not exist on our Solaris buildbot).  For a short term
-# workaround we stop building it until it's resolved.
-#SUBDIRS = badpacket perfdhcp
 SUBDIRS = badpacket perfdhcp