strip unused coomposite plot component

I forgot too remove the composite plot component object from the
TagPileup script when I moved the plot generation to the TagPileupOutput
class from the TagPileup script class two commmits ago. This commit
cleans up the unused code.

Author: owlang

src/scripts/Read_Analysis/TagPileup.java

@@ -1,6 +1,5 @@
 package scripts.Read_Analysis;
 
-import java.awt.Component;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
@@ -44,8 +43,6 @@ public class TagPileup {
 
 	PrintStream PS = null;
 
-	Component compositePlot = null;
-
 	String outMatrixBasename;
 
 	public TagPileup(File be, File ba, PileupParameters param, PrintStream outputwindow_ps, String outMat) {
@@ -426,10 +423,6 @@ public Vector<BEDCoord> loadCoord(File INPUT) throws FileNotFoundException {
 		return COORD;
 	}
 
-	public Component getCompositePlot() {
-		return (compositePlot);
-	}
-
 	private void printPS(String line) {
 		if (PS != null) {
 			PS.println(line);