Remove extra -endif.

This somehow got added in 5714f25,
which breaks compilation.

Change-Id: I54d1f04c28aba0343e5306d8f1bfa92755ea08d2
Reviewed-on: https://review.couchbase.org/c/ns_server/+/223976
Tested-by: Peter Searby <[email protected]>
Well-Formed: Build Bot <[email protected]>
Reviewed-by: Ben Huddleston <[email protected]>

Author: Peter-Searby

apps/ns_server/src/ns_config_default.erl

@@ -629,4 +629,4 @@ detect_columnar_version_test() ->
     false = detect_columnar_version(<<"1.8.0r-9-ga083a1e-enterprise">>),
     true = not detect_columnar_version(<<"1.8.0r-9-ga083a1e-comm">>),
     true = detect_columnar_version(<<"1.8.0r-9-ga083a1e-columnar">>).
--endif.-endif.
+-endif.