[trac812] reduce dependency: we don't need libdns++ for cc tests.

src/lib/cc/tests/Makefile.am

@@ -26,7 +26,6 @@ run_unittests_LDFLAGS = $(AM_LDFLAGS) $(GTEST_LDFLAGS)
 
 run_unittests_LDADD = $(GTEST_LDADD)
 run_unittests_LDADD +=  $(top_builddir)/src/lib/cc/libcc.la
-run_unittests_LDADD +=  $(top_builddir)/src/lib/dns/libdns++.la
 run_unittests_LDADD +=  $(top_builddir)/src/lib/exceptions/libexceptions.la
 
 endif