remove unnecessary workspace menu register

[ruanyl]

Description

@SuZhou-Joe had a good suggestion to move the workspace menu render from core workspace service module to chrome service, this PR is about to remove it from core workspace service

Issues Resolved

Screenshot

Testing the changes

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
  • yarn test:ftr
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[codecov-commenter]

Codecov Report

Merging #204 (e16a76c) into workspace-pr-integr (8f68914) will decrease coverage by 0.31%.
The diff coverage is 100.00%.

@@                   Coverage Diff                   @@
##           workspace-pr-integr     #204      +/-   ##
=======================================================
- Coverage                66.47%   66.17%   -0.31%     
=======================================================
  Files                     3408     3384      -24     
  Lines                    65155    64831     -324     
  Branches                 10431    10430       -1     
=======================================================
- Hits                     43309    42899     -410     
- Misses                   19250    19399     +149     
+ Partials                  2596     2533      -63     

Flag	Coverage Δ
Linux_	66.05% <100.00%> (?)
_1	?
_2	?
_3	44.58% <0.00%> (+<0.01%)	⬆️
_4	34.89% <0.00%> (+<0.01%)	⬆️

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

Files	Coverage Δ
src/core/public/core_system.ts	91.95% <100.00%> (ø)
...c/core/public/workspace/workspaces_service.mock.ts	100.00% <ø> (ø)
src/core/public/workspace/workspaces_service.ts	90.00% <100.00%> (-6.30%)	⬇️

... and 83 files with indirect coverage changes

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