*: optimize checksum mismatch error

[AstroProfundis]

What problem does this PR solve?

Add info to show the target that fails a checksum validation in error message, this could make it easier for users to know what went wrong.

Also cleanup some unused code after #906

Release notes:

NONE

[lucklove]

/lgtm

[ti-chi-bot]

[REVIEW NOTIFICATION]

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• lucklove

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[lucklove]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 39dbd11

[ti-chi-bot]

@AstroProfundis: Your PR was out of date, I have automatically updated it for you.

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[codecov-io]

Codecov Report

Merging #1170 (0d5e5c3) into master (947e59f) will decrease coverage by 14.54%.
The diff coverage is 28.57%.

@@             Coverage Diff             @@
##           master    #1170       +/-   ##
===========================================
- Coverage   53.59%   39.04%   -14.55%     
===========================================
  Files         288      224       -64     
  Lines       20426    16099     -4327     
===========================================
- Hits        10947     6286     -4661     
- Misses       7798     8734      +936     
+ Partials     1681     1079      -602     

Flag	Coverage Δ
cluster	39.04% <28.57%> (-6.06%)	⬇️
dm	?
integrate	39.04% <28.57%> (-8.96%)	⬇️
playground	?
tiup	?
unittest	?

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

Impacted Files	Coverage Δ
pkg/cluster/operation/download.go	36.84% <ø> (ø)
pkg/utils/sha.go	17.64% <0.00%> (-7.36%)	⬇️
pkg/cluster/clusterutil/cluster.go	57.57% <33.33%> (-3.72%)	⬇️
pkg/repository/v1_repository.go	39.54% <33.33%> (-24.10%)	⬇️
pkg/repository/store/store.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/queue/any_queue.go	0.00% <0.00%> (-83.34%)	⬇️
pkg/repository/utils/hash.go	0.00% <0.00%> (-81.82%)	⬇️
pkg/meta/err.go	0.00% <0.00%> (-81.25%)	⬇️
pkg/telemetry/meta.go	0.00% <0.00%> (-80.00%)	⬇️
pkg/telemetry/scrub.go	6.66% <0.00%> (-80.00%)	⬇️
... and 169 more

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