real/Makefile: remove the mention of ebnf2ps

Summary:
The ebnf2ps benchmark has been removed. It's mentioned in the
`Makefile` due to how git merged multiple commits touching the file.
This commit removes it.

Signed-off-by: Michal Terepeta <michal.terepeta@gmail.com>

Test Plan: compile & run nofib

Reviewers: bgamari

Reviewed By: bgamari

Differential Revision: https://phabricator.haskell.org/D3156

real/Makefile

@@ -5,7 +5,7 @@ SUBDIRS = anna bspt cacheprof compress compress2 fem fluid fulsom gamteb gg \
           grep hidden hpg infer lift maillist mkhprog parser pic prolog \
           reptile rsa scs symalg veritas
 
-OTHER_SUBDIRS = PolyGP ebnf2ps linear rx
+OTHER_SUBDIRS = PolyGP linear rx
 
 include $(TOP)/mk/target.mk