am 259b4c86: Merge "SIP: clean up unused class and fields." into gingerbread

Merge commit '259b4c860212dd528b25d1cce6e74be01afed85c' into gingerbread-plus-aosp

* commit '259b4c860212dd528b25d1cce6e74be01afed85c':
  SIP: clean up unused class and fields.