delete ertra spaces

[yuxiaobo96]

Signed-off-by: yuxiaobo [email protected]

Ⅰ. Describe what this PR did

Delete ertra spaces

Ⅱ. Does this pull request fix one issue?

NONE

Ⅲ. Why don't you add test cases (unit test/integration test)? (你真的觉得不需要加测试吗？)

Don't need

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[pouchrobot]

Thanks for your contribution. 🍻 @yuxiaobo96
While we thought PR TITLE could be more specific, longer than 20 chars.
Please edit this PR title instead of opening a new one.
More details, please refer to https://github.com/dragonflyoss/Dragonfly/blob/master/CONTRIBUTING.md

[codecov-io]

Codecov Report

Merging #874 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #874   +/-   ##
=======================================
  Coverage   39.67%   39.67%           
=======================================
  Files         109      109           
  Lines        6415     6415           
=======================================
  Hits         2545     2545           
  Misses       3661     3661           
  Partials      209      209

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[allencloud]

LGTM