Remove unused logger from RecursiveMerger

JGit doesn't currently use java.util.logging.Logger.  Remove this
never-used Logger introduced in ab99b78ca0 (Implement recursive
merge strategy, 2013-02-21) to make that easier to see.

Change-Id: I92c578e7f3617085a667de7c992174057be3eb71

org.eclipse.jgit/src/org/eclipse/jgit/merge/RecursiveMerger.java

@@ -53,7 +53,6 @@ import java.io.IOException;
 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.logging.Logger;
 
 import org.eclipse.jgit.dircache.DirCache;
 import org.eclipse.jgit.dircache.DirCacheBuilder;
@@ -85,8 +84,6 @@ import org.eclipse.jgit.treewalk.WorkingTreeIterator;
  * @since 3.0
  */
 public class RecursiveMerger extends ResolveMerger {
-	static Logger log = Logger.getLogger(RecursiveMerger.class.toString());
-
 	/**
 	 * The maximum number of merge bases. This merge will stop when the number
 	 * of merge bases exceeds this value