Remove rescues from try calls where method doesn't exist
Via #3129, we added rescues to our try calls in app/helpers/compute_resources_vms_helper.rb as the method may not exist. Rails 4.0's #try will return nil instead of throwing an error, so these can be removed.
fixes #3158 - Remove rescues from try calls in helper file
In app/helpers/compute_resources_vms_helper.rb, we added rescues to
try calls as the method may not exist with older version of rails.
Now, we have updated rails to 4.x.
In this commit removed rescue block as Rails 4.0's try method
will return nil instead of throwing an error,