tests: remove so timeout

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1554058 13f79535-47bb-0310-9956-ffa450edef68
tests: improve this test

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1554060 13f79535-47bb-0310-9956-ffa450edef68