Use upstream Generic.Files.OneObjectStructurePerFile sniff

Authored by Legoktm on Fri, Nov 10, 7:41 AM.

Description

Use upstream Generic.Files.OneObjectStructurePerFile sniff

Our own OneClassPerFileSniff was just a copy of the proposed upstream sniff
before it was released.

Change-Id: I208bb58b9486f29b71c6c880da14744221541b06