Refactor DelayedPortalTagRenderer to remove getScripts() and use getMarkup() instead

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: None
• Fix Version/s: portal-3.0.3
• Component/s: Liferay Faces Portal / Demos / Tests
• Labels: None

As a follow up to the fix for FACES-3243, DelayedPortalTagRenderer needs similar refactoring to remove the getScripts() method and replace it with the getMarkup() method.