[BUGFIX] Modify the logger to avoid files occupying a long time

[daaitudian]

Description

Modify the logger to avoid files occupying a long time.
Writing log in the file, the file will always be occupied. This PR can avoid this problem

Checklist

Essentials

• PR's title starts with a category (e.g. [BUGFIX], [MODEL], [TUTORIAL], [FEATURE], [DOC], etc)
• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage
• Code is well-documented

[mxnet-bot]

Hey @daaitudian , Thanks for submitting the PR
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[daaitudian]

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[mxnet-bot]

Jenkins CI successfully triggered : [website, unix-cpu, unix-gpu]

[daaitudian]

@mxnet-bot run ci [unix-gpu, website]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-gpu, website]

[daaitudian]

@mxnet-bot run ci [unix-gpu, website]

[mxnet-bot]

Jenkins CI successfully triggered : [unix-gpu, website]

[daaitudian]

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[mxnet-bot]

Jenkins CI successfully triggered : [unix-gpu, website]