rtc: twl: make driver DT only

Since there are no platform based users and all users
of this code are TI OMAP-based which is DT only, it makes
sense to remove unused code.

Signed-off-by: Nicolae Rosia <[email protected]>
Tested-by: Tony Lindgren <[email protected]>
Signed-off-by: Alexandre Belloni <[email protected]>
2 files changed