[Tizen] Revert "[Tizen] Enforce device scale factor value to '2.0' on Tizen"

This reverts commit c79b41fde47fe0a6da116c9d4f0c2e9ad5410e15.

As Aura scales all the contents including UI elements, this change affected status bar appearance. The status bar should handle HIDPI properly before we can enable it again on Tizen.