Remove superfluous GetMobileNotice call.

* Currently, GetMobileNotice gets called twice instead of once.
* This change will make it so that GetMobileNotice is only called once, from the WML context. It also removes some effectively dead code in a template view.
* This change can be implemented independently.
* Change 69336 may result in GetMobileNotice becoming the definitive banner generation hook (instead of the current split between MinervaPreRender and GetMobileNotice), although to be functional it will need to give the callee full control over the banners array at the last possible moment (similar to MinervaPreRender). Discussion is underway on change 69336.

Change-Id: I151858a632fbd3456f38d2c28e512e959bd5a757
Merge "Remove superfluous GetMobileNotice call."