Make UICC code subID-less.

MSIM code introduced code in the UICC objects that refer to the subIds.
This is potentially very dangerous becuase subIds are only initialized after
the UICC object is completely initialized. Hence using subId in the UICC code
could lead to lots of properties being not set correctly.

The new code, uses the phoneId everywhere within the UICC code, which is
initialized when the UICC object is created and will remain constant for the
lifetime of the UICC object.

Bug: 18748407
Change-Id: I1f50abc40b8592751cdeca2de2c76ac9f2d40768