switch: arizona: Remove moisture detection and antenna handling funct…

…ionality

In the switch driver there are two pieces of functionalities,
One is the "antenna" handling, the other is moisture detection,
Which we are not using currently.So This patch removes these
functionalities.

Change-Id: I7be5a567182378bbf76dc726a94050869bc6347a
Signed-off-by: Swetha Nagapuri <swetha.nagapuri@incubesol.com>