fix: remove unused variables

[DonIsaac]

What This PR Does

Removes all declared, but unused, variables. This is part of an effort to keep Oxlint's CI pipelines green, as we are in the process of promoting no-unused-vars to correctness. Thank you for using Oxlint ❤️

Note: I am the product manager of Oxlint

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All committers have signed the CLA.

[graphite-app]

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[nx-cloud]

☁️ Nx Cloud Report

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✅ Successfully ran 6 targets

• nx test:coverage @affine/monorepo
• nx build @affine/server-native -- --target x86_64-unknown-linux-gnu --use-napi-cross
• nx build @affine/native -- --target x86_64-pc-windows-msvc --use-napi-cross
• nx build @affine/native -- --target x86_64-apple-darwin --use-napi-cross
• nx build @affine/native -- --target aarch64-apple-darwin --use-napi-cross
• nx build @affine/native -- --target x86_64-unknown-linux-gnu --use-napi-cross

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[codecov]

Codecov Report

Attention: Patch coverage is 22.22222% with 7 lines in your changes missing coverage. Please review.

Project coverage is 55.18%. Comparing base (01c9d17) to head (dd0724f).
Report is 2 commits behind head on canary.

Files	Patch %	Lines
packages/backend/server/src/core/auth/service.ts	0.00%	1 Missing ⚠️
packages/backend/server/src/core/quota/service.ts	0.00%	1 Missing ⚠️
packages/backend/server/src/core/utils/doc.ts	0.00%	1 Missing ⚠️
...s/backend/server/src/core/workspaces/controller.ts	0.00%	1 Missing ⚠️
...ges/backend/server/src/fundamentals/helpers/url.ts	0.00%	1 Missing ⚠️
...server/src/fundamentals/storage/providers/utils.ts	0.00%	1 Missing ⚠️
...rc/plugins/copilot/workflow/executor/check-html.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           canary    #7968      +/-   ##
==========================================
- Coverage   55.22%   55.18%   -0.05%     
==========================================
  Files        1053     1053              
  Lines       44678    44678              
  Branches     5263     5262       -1     
==========================================
- Hits        24674    24656      -18     
- Misses      19626    19644      +18     
  Partials      378      378              

Flag	Coverage Δ
server-test	77.60% <22.22%> (-0.08%)	⬇️
unittest	26.96% <ø> (ø)

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[graphite-app]

Merge activity

• Aug 26, 2:11 AM EDT: forehalo added this pull request to the Graphite merge queue.
• Aug 26, 2:23 AM EDT: The Graphite merge queue couldn't merge this PR because it failed for an unknown reason (Stack merges are not currently supported for forked repositories. Please create a branch in the target repository in order to merge).