OPropertyStateHelper::getTypes isn't an override of XTypeProvider::getTypes

Change-Id: I633c711aabbd2ec7d1385d106b512f14672393f1
Remove newly unused getUnoTunnelImplementationId functions

...after recent clean-up of getImplementationId implementations.

Change-Id: I2a11f6ddf03dc7852b7e8e50dc6284a7215a0113