Bug 5474 should not use tool tips for labels
To be consistent with other preference pages, the debug preference labels for step filtering (filter sythetic methods, etc), should not specify tool tips. Instead, the relevant information should just be in the label.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavaDebugPreferencePage.java
if (fEditorText != null) {
			fEditorText.dispose();
			fEditorText = null;
			fNewStepFilter = null;
			fNewTableItem = null;
			fTableEditor.setEditor(null, null, 0);			
		}
	}
	
	private void removeNewFilter() {
		fStepFilterContentProvider.removeFilters(new Object[] {fNewStepFilter});
	}
	
	/**
	 * A valid step filter is simply one that is not empty (all spaces),
	 * and has no embedded spaces.  Beyond this, a string cannot be
	 * validated as corresponding to an existing type or package (and
	 * this is probably not even desirable).  
	 */
	private boolean validateEditorInput(String trimmedValue) {
		int embeddedSpace = trimmedValue.indexOf(' ');
		if (embeddedSpace != -1) {
			return false;
		}
		return true;
	}
	
	private void addType() {
		Shell shell= JavaPlugin.getActiveWorkbenchShell();
		SelectionDialog dialog= null;