chore: Remove broken coverage report link

[Gudahtt]

Description

The unit test coverage report was previously available in the metamaskbot comment, but this link has been broken since we migrated unit tests from CircleCI to GitHub Actions in #25570

The broken link has been removed for now. It can be restored in the future, after migrating the metamaskbot comment to GitHub actions as well.

Related issues

N/A

Manual testing steps

Check that the broken link is no longer shown in the metamaskbot PR comment.

Screenshots/Recordings

N/A

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[metamaskbot]

Builds ready [87f14cc]

• builds: chrome, firefox
• builds (beta): chrome
• builds (flask): chrome, firefox
• builds (MMI): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Background Module Init Stats
• mv3: UI Init Stats
• mv3: Module Load Stats
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7
  • common: 0, 1, 10, 11, 12, 2, 3, 4, 5, 6, 7, 8, 9
  • content-script: 0
  • offscreen: 0
  • ui: 0, 1, 10, 11, 12, 13, 2, 3, 4, 5, 6, 7, 8, 9

Page Load Metrics (1743 ± 59 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	1559	1975	1759	125	60
		domContentLoaded	1492	1961	1713	123	59
		load	1501	1973	1743	123	59
		domInteractive	25	253	51	50	24
		backgroundConnect	10	84	33	23	11
		firstReactRender	16	99	57	30	14
		getState	4	92	20	25	12
		initialActions	0	0	0	0	0
		loadScripts	1111	1530	1283	113	54
		setupStore	6	80	12	16	8
		uiStartup	1743	2517	2112	247	118

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 0 Bytes (0.00%)
• common: 0 Bytes (0.00%)

[hjetpoluru]

Below link for the code coverage does not appear in the PR and the changes implemented in the PR
code coverage: Report