fix(worker): removed UpdateBlobberSettings from blobber

[cnlangzi]

Changes

• removed UpdateBlobberSettings. Because blobber's settings must be updated by owner wallet. We only have operation wallet on blobber server. it is impossible to update blobber settings. cc @lpoli

Fixes

Tests

Tasks to complete before merging PR:

• Ensure system tests are passing. If not Run them manually to check for any regressions 📋
• Do any new system tests need added to test this change? do any existing system tests need updated? If so create a PR at 0chain/system_test
• Merge your system tests PR to master AFTER merging this PR

Associated PRs (Link as appropriate):

• 0chain:
• gosdk:
• system_test:
• zboxcli:
• zwalletcli:
• Other: ...

[codecov-commenter]

Codecov Report

Merging #772 (f366a71) into staging (1a95e83) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           staging     #772   +/-   ##
========================================
  Coverage    24.41%   24.41%           
========================================
  Files           77       77           
  Lines         7826     7826           
========================================
  Hits          1911     1911           
  Misses        5648     5648           
  Partials       267      267           

Flag	Coverage Δ
Unit-Tests	24.41% <ø> (ø)

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[peterlimg]

lgtm

[service-0chain]

Manual system tests [success] with the following config

config	value
tests skipped	FALSE
system-tests	master
gosdk	NOT OVERRIDDEN
zboxcli	staging
zwalletcli	staging
0chain	staging
blobber	staging
authorizer	staging
0box	staging
0block	staging
0dns	staging
explorer	master
0proxy	staging
0search	staging