You can download Wanam Xposed from the play store

Link : https://play.google.com/store/apps/details?id=ma.wanam.xposed

When you open the app you'll be instructed to install the framework (I've done it personally and haven't had any problems)

Once this is done go back to the original app and there will be many customizable features available including one for hiding the alarm clock icon

This is not my app just use it personally and find it great

I use stock JB 4.3 Rooted

You can download Wanam Xposed from Xposed repository here.

When you open the app you'll be instructed to install the framework (I've done it personally and haven't had any problems).

Once this is done go back to the original app and there will be many customizable features available including one for hiding the alarm clock icon.

This is not my app. I just use it personally on a stock JB 4.3 (rooted) and find it great.