remove SpanElementDistanceQuery
diff --git a/src/main/java/de/ids_mannheim/korap/query/SpanElementDistanceQuery.java b/src/main/java/de/ids_mannheim/korap/query/SpanElementDistanceQuery.java
deleted file mode 100644
index f6cb836..0000000
--- a/src/main/java/de/ids_mannheim/korap/query/SpanElementDistanceQuery.java
+++ /dev/null
@@ -1,60 +0,0 @@
-package de.ids_mannheim.korap.query;
-
-import java.io.IOException;
-import java.util.Map;
-
-import org.apache.lucene.index.AtomicReaderContext;
-import org.apache.lucene.index.Term;
-import org.apache.lucene.index.TermContext;
-import org.apache.lucene.search.spans.SpanQuery;
-import org.apache.lucene.search.spans.Spans;
-import org.apache.lucene.util.Bits;
-
-import de.ids_mannheim.korap.query.spans.ElementDistanceSpan;
-
-/** Match two ordered Spans with minimum and maximum distance constraints.
- * In this query, the distance unit is the difference between two element
- * positions, where the elements can be sentence or paragraph elements.
- *
- * @author margaretha
- * */
-public class SpanElementDistanceQuery extends SpanDistanceQuery {
-
- private SpanQuery elementQuery;
-
- public SpanElementDistanceQuery(SpanQuery elementQuery,
- SpanQuery firstClause, SpanQuery secondClause,
- int minDistance, int maxDistance,
- boolean collectPayloads) {
- super(firstClause, secondClause, minDistance, maxDistance, collectPayloads);
- this.elementQuery = elementQuery;
- }
-
- @Override
- public SpanElementDistanceQuery clone() {
- SpanElementDistanceQuery query = new SpanElementDistanceQuery(
- (SpanQuery) elementQuery.clone(),
- (SpanQuery) firstClause.clone(),
- (SpanQuery) secondClause.clone(),
- this.minDistance,
- this.maxDistance,
- this.collectPayloads
- );
- query.setBoost(getBoost());
- return query;
- }
-
- @Override
- public Spans getSpans(AtomicReaderContext context, Bits acceptDocs,
- Map<Term, TermContext> termContexts) throws IOException {
- return new ElementDistanceSpan(this,context, acceptDocs,termContexts);
- }
-
- public SpanQuery getElementQuery() {
- return elementQuery;
- }
-
- public void setElementQuery(SpanQuery elementQuery) {
- this.elementQuery = elementQuery;
- }
-}