hero: clean up prop messes

* Common props are moved to common repo now.
* Proper handle of single-SIM variant.
* Remove deprecated and duplicated props.
* Some props such as device name should be set by build system.

* This commit reverts commit b253513b.
* This commit fixes commit 9ab7a74b.
* This commit fixes commit 0d86952e.
* This commit fixes commit 3e85dc8d.

Change-Id: Ida92eb5a3524dcebffc13217c5d0dcb70de15353