Remove duplicated functions from redis.py

[locriandev]

No description provided.

[openshift-ci]

@locriandev: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/security	0bcd561	link	false	/test security

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[joepvd]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ashwindasr, joepvd

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