Revert "Bypass the lockscreen when the hardware keyboard is slid out and security mode is 'none'"

This causes issues, documented in CYAN-5567.

This reverts commit c12204450f41eb3a6175b5fae7f1a853c059c6eb.

Change-Id: Ic9478eadbfa830e869007dad17983bd33c0ac6d6
radio: Treat REGULAR_DEACTIVATION events as transient errors on AT&T

Change-Id: I6872be05de01dbe41d923f4274b70414f65d5f7e