Remove obsolete Lucene version constants.

src/main/java/com/gitblit/service/LuceneService.java

diff --git a/src/main/java/com/gitblit/service/LuceneService.java b/src/main/java/com/gitblit/service/LuceneService.java
index 59b1ff2..f22cb5a 100644
--- a/src/main/java/com/gitblit/service/LuceneService.java
+++ b/src/main/java/com/gitblit/service/LuceneService.java
@@ -65,7 +65,6 @@
 import org.apache.lucene.search.highlight.SimpleSpanFragmenter;

 import org.apache.lucene.store.Directory;

 import org.apache.lucene.store.FSDirectory;

-import org.apache.lucene.util.Version;

 import org.eclipse.jgit.diff.DiffEntry.ChangeType;

 import org.eclipse.jgit.lib.Constants;

 import org.eclipse.jgit.lib.FileMode;

@@ -125,8 +124,6 @@
 	private static final String CONF_ALIAS = "aliases";

 	private static final String CONF_BRANCH = "branches";

 

-	private static final Version LUCENE_VERSION = Version.LUCENE_4_10_0;

-

 	private final Logger logger = LoggerFactory.getLogger(LuceneService.class);

 

 	private final IStoredSettings storedSettings;

src/main/java/com/gitblit/tickets/TicketIndexer.java

diff --git a/src/main/java/com/gitblit/tickets/TicketIndexer.java b/src/main/java/com/gitblit/tickets/TicketIndexer.java
index 02af25e..652323a 100644
--- a/src/main/java/com/gitblit/tickets/TicketIndexer.java
+++ b/src/main/java/com/gitblit/tickets/TicketIndexer.java
@@ -49,7 +49,6 @@
 import org.apache.lucene.search.TopScoreDocCollector;
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.store.FSDirectory;
-import org.apache.lucene.util.Version;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -167,8 +166,6 @@
 
 	private final Logger log = LoggerFactory.getLogger(getClass());
 
-	private final Version luceneVersion = Version.LUCENE_5_5_2;
-
 	private final File luceneDir;
 
 	private IndexWriter writer;