Revert "Update HAL 1.6 for 5G Slicing"

Revert "Update ril_service in cuttlefish for 5G Slicing"

Revert "Update framework for 5G Slicing"

Revert submission 13372384-5g_slicing_master

Reason for revert: Broken build: b/178985315
Reverted Changes:
Ie2af7642d:Update ril_service in cuttlefish for 5G Slicing
Ia81414769:Update framework for 5G Slicing
I18d25a104:Update HAL 1.6 for 5G Slicing

Change-Id: I3ba332c95bed611ec24be440ce5d6a0e8b0b6a66