cleans interfaces up

plugins/com.minres.scviewer.database.ftr/src/com/minres/scviewer/database/ftr/AbstractTxStream.java

@@ -142,6 +142,11 @@ abstract class AbstractTxStream extends HierNode implements IWaveform {
 		return rowCount;
 	}
 
+	@Override
+	public int getWidth() {
+		return 0;
+	}
+
 	/**
 	 * Calculate concurrency.
 	 */

plugins/com.minres.scviewer.database.ftr/src/com/minres/scviewer/database/ftr/FtrDbLoader.java

@@ -184,7 +184,7 @@ public class FtrDbLoader implements IWaveformDbLoader {
 	 * @throws InputFormatException the input format exception
 	 */
 	@Override
-	public void load(IWaveformDb db, File file) throws InputFormatException {
+	public void load(File file) throws InputFormatException {
 		dispose();
 		this.file=file;
 		try {