test/Makefile dclean cleans out a few files too many.

The files removed are the ones that were symbolic links before, but
aren't now, so we should not remove them any more.

Reviewed-by: Stephen Henson <steve@openssl.org>

test/Makefile

diff --git a/test/Makefile b/test/Makefile
index e3fb791..74fdf45 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -405,8 +405,7 @@
 dclean:
 	$(PERL) -pe 'if (/^# DO NOT DELETE THIS LINE/) {print; exit(0);}' $(MAKEFILE) >Makefile.new
 	mv -f Makefile.new $(MAKEFILE)
-	rm -f $(SRC) $(SHA256TEST).c $(SHA512TEST).c evptests.txt newkey.pem testkey.pem \
-			testreq.pem
+	rm -f newkey.pem testkey.pem testreq.pem
 
 clean:
 	rm -f .rnd tmp.bntest tmp.bctest *.o *.obj *.dll lib tags core .pure .nfs* *.old *.bak fluff $(EXE) *.ss *.srl log dummytest