cleanup: Drop unused parameter on DhtPackParser

Change-Id: I8f2cd0a04cc95a02c49c16dade1b3509cba02e2d

org.eclipse.jgit.storage.dht/src/org/eclipse/jgit/storage/dht/DhtPackParser.java

 			break;
 
 		case OBJ_TREE:
-			onTree(info, data);
+			onTree(data);
 			break;
 
 		case OBJ_TAG:
-			onTag(info, data);
+			onTag(data);
 			break;
 		}
 	}
 		}
 	}
 
-	private void onTree(DhtInfo obj, byte[] data) {
+	private void onTree(byte[] data) {
 		if (isSaveAsCachedPack()) {
 			treeParser.reset(data);
 			while (!treeParser.eof()) {
 		}
 	}
 
-	private void onTag(DhtInfo obj, byte[] data) {
+	private void onTag(byte[] data) {
 		if (isSaveAsCachedPack()) {
 			idBuffer.fromString(data, 7); // "object $sha1"
 			lookupByName(idBuffer).setReferenced();