Revert "Fix bug when there are more than 1 slide master."

This reverts commit 64ca96d3616c175ac27efd295afb367f0a0163cd.

engine/org.eclipse.birt.report.engine.emitter.pptx/src/org/eclipse/birt/report/engine/emitter/pptx/writer/Presentation.java

@@ -52,14 +52,14 @@ public class Presentation extends Component
 
 	private int slideMasterId = 1;
 	private int slideLayoutId = 1;
-	private int themeId = 1;
 
 	private long globalId = 2147483648L;
 
 	private int width = 0, height = 0;
 
 	private Package pkg;
 
+	private Theme theme;
 	private HashMap<String, SlideMaster> slideMasters = new HashMap<String, SlideMaster>();
 	private List<Slide> slides = new ArrayList<Slide>( );
 	private String author, title, description, subject;
@@ -79,6 +79,9 @@ public Presentation( OutputStream out, String tempFileDir,
 		{
 			writer = part.getCacheWriter( );
 			initialize( );
+			theme = new Theme( part );
+			//createSlideMaster( );
+			//slideMaster.referTo( theme );
 		}
 		catch ( IOException e )
 		{
@@ -93,7 +96,6 @@ public SlideMaster getSlideMaster( String name ) throws IOException
 
 	public SlideMaster createSlideMaster(String name, PageArea area) throws IOException
 	{
-		Theme theme = new Theme( part, this );
 		SlideMaster slideMaster = new SlideMaster( this, area );
 		slideMaster.referTo( theme );
 		slideMasters.put( name, slideMaster);
@@ -252,10 +254,6 @@ public int getNextSlideMasterId() {
 		return slideMasterId++;
 	}
 
-	public int getNextThemeId() {
-		return themeId++;
-	}
-
 	public int getNextSlideLayoutId() {
 		return slideLayoutId++;
 	}