Remove old drivers dead code

This patch removes some common helper method/class.
Because they are not used anymore by current amqpdriver.

Change-Id: I183750e158e05cf1d0b5e37725676d4882e0c043
Merge "Remove old drivers dead code"
Update ensure()/reconnect() to catch MessagingError

The error handling code that gets connections reset if necessary
caught ConnectionError.  It really needs to catch MessagingError,
which ConnectionError inherits from.  There are other types of
MessagingErrors that may occur, such as InternalError, and they need
to cause the connection to reset, as well.

Closes-bug: #1303890
Change-Id: Ic5082b74a362ded8b35cbc75cf178fe6e0db62d0
Merge "Update ensure()/reconnect() to catch MessagingError"