r/m bogus import

git-svn-id: https://svn.apache.org/repos/asf/cassandra/trunk@1154373 13f79535-47bb-0310-9956-ffa450edef68

Author: jbellis

src/java/org/apache/cassandra/db/compaction/PrecompactedRow.java

@@ -36,7 +36,6 @@
 import org.apache.cassandra.db.DecoratedKey;
 import org.apache.cassandra.io.sstable.SSTableIdentityIterator;
 import org.apache.cassandra.io.util.DataOutputBuffer;
-import sun.tools.tree.ThisExpression;
 
 /**
  * PrecompactedRow merges its rows in its constructor in memory.