remove unused format log print

[tanshanshan]

What this PR does / why we need it:
remove unused format log print

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

Release note:

NONE

[stewart-yu]

IMO, the format is OK. Errorf() equal to Error(), when no parameter 🙂

[yue9944882]

/shrug

[yue9944882]

/cc @nikhita

[dims]

/uncc

[dims]

/approve

will let @nikhita apply the lgtm

[nikhita]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dims, nikhita, tanshanshan

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• pkg/cloudprovider/OWNERS [dims]

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[nikhita]

/retest

…

On Wed, Oct 3, 2018 at 2:07 PM k8s-ci-robot ***@***.***> wrote: @tanshanshan <https://github.com/tanshanshan>: The following test *failed*, say /retest to rerun them all: Test name Commit Details Rerun command pull-kubernetes-integration f6da98c <f6da98c> link <https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/pr-logs/pull/68264/pull-kubernetes-integration/29630/> /test pull-kubernetes-integration Full PR test history <https://k8s-gubernator.appspot.com/pr/68264>. Your PR dashboard <https://k8s-gubernator.appspot.com/pr/tanshanshan>. Please help us cut down on flakes by linking to <https://git.k8s.io/community/contributors/devel/flaky-tests.md#filing-issues-for-flaky-tests> an open issue <https://github.com/kubernetes/kubernetes/issues?q=is:issue+is:open> when you hit one in your PR. Instructions for interacting with me using PR comments are available here <https://git.k8s.io/community/contributors/guide/pull-requests.md>. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra <https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:> repository. I understand the commands that are listed here <https://go.k8s.io/bot-commands>. — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub <#68264 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/APXA0EelNZWQQehGarmW-0_4jgPIjE_wks5uhHdcgaJpZM4WaHFx> .

[nikhita]

/retest

…

On Wed, Oct 3, 2018 at 2:28 PM k8s-ci-robot ***@***.***> wrote: @tanshanshan <https://github.com/tanshanshan>: The following test *failed*, say /retest to rerun them all: Test name Commit Details Rerun command pull-kubernetes-integration f6da98c <f6da98c> link <https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/pr-logs/pull/68264/pull-kubernetes-integration/29639/> /test pull-kubernetes-integration Full PR test history <https://k8s-gubernator.appspot.com/pr/68264>. Your PR dashboard <https://k8s-gubernator.appspot.com/pr/tanshanshan>. Please help us cut down on flakes by linking to <https://git.k8s.io/community/contributors/devel/flaky-tests.md#filing-issues-for-flaky-tests> an open issue <https://github.com/kubernetes/kubernetes/issues?q=is:issue+is:open> when you hit one in your PR. Instructions for interacting with me using PR comments are available here <https://git.k8s.io/community/contributors/guide/pull-requests.md>. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra <https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:> repository. I understand the commands that are listed here <https://go.k8s.io/bot-commands>. — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub <#68264 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/APXA0DntVHJfoVXzSMYJYdzocwoSj_fcks5uhHxSgaJpZM4WaHFx> .

[fejta-bot]

/retest
This bot automatically retries jobs that failed/flaked on approved PRs (send feedback to fejta).

Review the full test history for this PR.

Silence the bot with an /lgtm cancel comment for consistent failures.

[nikhita]

/retest

…

On Wed, Oct 3, 2018 at 6:32 PM k8s-ci-robot ***@***.***> wrote: @tanshanshan <https://github.com/tanshanshan>: The following test *failed*, say /retest to rerun them all: Test name Commit Details Rerun command pull-kubernetes-e2e-gce-100-performance f6da98c <f6da98c> link <https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/pr-logs/pull/68264/pull-kubernetes-e2e-gce-100-performance/21873/> /test pull-kubernetes-e2e-gce-100-performance Full PR test history <https://k8s-gubernator.appspot.com/pr/68264>. Your PR dashboard <https://k8s-gubernator.appspot.com/pr/tanshanshan>. Please help us cut down on flakes by linking to <https://git.k8s.io/community/contributors/devel/flaky-tests.md#filing-issues-for-flaky-tests> an open issue <https://github.com/kubernetes/kubernetes/issues?q=is:issue+is:open> when you hit one in your PR. Instructions for interacting with me using PR comments are available here <https://git.k8s.io/community/contributors/guide/pull-requests.md>. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra <https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:> repository. I understand the commands that are listed here <https://go.k8s.io/bot-commands>. — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub <#68264 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/APXA0Eg4jyOjQ8d0TMkxDTiV0_WzgruUks5uhLVzgaJpZM4WaHFx> .