removed Volkov voices which is actually Romanov from RA2

fixes #3190
removed RA ShipVoice which is identical to VehicleVoice
removed Volkov entirely as more permission problems arised

- unknown source for weapon sounds
- icon borrowed from APB without asking for permission
Merge pull request #3194 from Mailaender/ra-voice-cleanup

Removed Romanov ripped from RA2 and redundant voice definitions