Remove state copy and clear from MakeSSContext.
Remove state copy and clear from MakeSSContext.

These were left over from the time:
- pin didn't preserve FP state by default.
- the handshake was one static buffer that needed to be cleaned.

Change-Id: I919d3e29af40b60e2c65e515a0bd38759beb6191

s-kanev/XIOSim,s-kanev/XIOSim,s-kanev/XIOSim,s-kanev/XIOSim