Remove invalid reference to conn in epcopen
Remove invalid reference to conn in epcopen

Signed-off-by: Mark Syms <655512b2a8f1aba6e4085462b623575da824f038@citrix.com>

stefanopanella/xapi-storage-plugins,stefanopanella/xapi-storage-plugins,stefanopanella/xapi-storage-plugins