removed checkstyle violation

Author: hszumila

analysis/src/main/java/org/hps/analysis/tuple/TupleDriver.java

@@ -37,7 +37,6 @@
 import org.lcsim.event.ReconstructedParticle;
 import org.lcsim.event.Track;
 import org.lcsim.event.TrackState;
-import org.lcsim.event.base.BaseCluster;
 import org.lcsim.event.base.BaseTrackState;
 import org.lcsim.fit.helicaltrack.HelicalTrackFit;
 import org.lcsim.geometry.Detector;