Revert "Use SlimRoms kernel for manta"

This reverts commit 562939df851fc3e33653262bad361784b2a224d3.
Revert "Add vendor/samsung from TheMuppets"

This reverts commit 1f370eccda322cc38eee629bb8b13e7566de8305.
Revert "Add hardware/samsung from SlimRoms"

This reverts commit e03d1c0865f868e532d82cb8491633a4567f6d89.
Revert "Add support for manta"

This reverts commit 24378246610606757957053953964b27f423f215.
Add asus vendor for grouper support