feature: remove proto redundant field

[garfield009]

Signed-off-by: zuozheng.hzz zuozheng.hzz@alibaba-inc.com

Description

Related Issue

#496

Motivation and Context

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist:

• Code compiles correctly.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Merging #508 (196d8a5) into main (e655635) will decrease coverage by 0.40%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##             main     #508      +/-   ##
==========================================
- Coverage   39.59%   39.18%   -0.41%     
==========================================
  Files          81       81              
  Lines        6284     6285       +1     
==========================================
- Hits         2488     2463      -25     
- Misses       3437     3464      +27     
+ Partials      359      358       -1     

Flag	Coverage Δ
e2etests	∅ <ø> (∅)
unittests	39.18% <80.00%> (-0.41%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cdnsystem/server/service/cdn_seed_server.go	0.00% <0.00%> (ø)
client/daemon/peer/peertask_reuse.go	0.00% <0.00%> (ø)
client/daemon/service/manager.go	31.68% <ø> (-1.33%)	⬇️
client/daemon/peer/peertask_file.go	53.65% <100.00%> (ø)
client/daemon/peer/peertask_stream.go	54.77% <100.00%> (-2.21%)	⬇️
client/daemon/transport/transport.go	75.53% <100.00%> (ø)
internal/idgen/task_id.go	100.00% <100.00%> (ø)
client/daemon/peer/peertask_stream_callback.go	44.30% <0.00%> (-20.26%)	⬇️
client/daemon/peer/piece_manager.go	65.44% <0.00%> (-1.63%)	⬇️

[gaius-qi]

LGTM