closed #2403: Reverting commit 239323c to fix the bug that Tint and Fade action can't work for ProgressTimer.
issue #2403: Removing unused implemented methods like setOpacityModifyRGB, isOpacityModifyRGB since they're defined in their super class.
Merge pull request #3149 from dumganhar/iss2403-progresstimer

closed 2403: Reverting commit 239323c to fix the bug that Tint and Fade action can't work for ProgressTimer.