Revert "added session check to prevent finalizer errors"
Revert "added session check to prevent finalizer errors"

This reverts commit 9b3ba85166999bf00bc79cecb271e86d0a784f70.

logankimmel/rbvmomi,synthead/rbvmomi,rapid7/rbvmomi,rlane/rbvmomi,omar-infinio/rbvmomi,10xEngineer/rbvmomi,frapposelli/vagrant-rbvmomi,synthead/rbvmomi,rlane/rbvmomi,frapposelli/vagrant-rbvmomi,10xEngineer/rbvmomi,jusko/rbvmomi,rapid7/rbvmomi,vmware/rbvmomi,rcorrieri/rbvmomi,jusko/rbvmomi