Remove unnecessary 'set -x' at EOL in genconfig script
Remove unnecessary 'set -x' at EOL in genconfig script

tools/generate_config_file_samples.sh contains 'set -x'
at the end of line but it is unnecessary.

It was pointed out in the policy-in-code review
and I borrowed a script from this.

Change-Id: I2a0fd6051702693db340904fbe738d44ca4f15c0

mahak/neutron,noironetworks/neutron,openstack/neutron,mahak/neutron,openstack/neutron,mahak/neutron,noironetworks/neutron,openstack/neutron