SEAB-6840: remove redundant "More" dropdown

[hyunnaye]

Description
This PR removes the redundant "More" dropdown in the My Workflows and My Tools pages.

Before:

After:

Review Instructions
Verify that the dropdown is removed

Issue
https://ucsc-cgl.atlassian.net/browse/SEAB-6840
Security
If there are any concerns that require extra attention from the security team, highlight them here.

Please make sure that you've checked the following before submitting your pull request. Thanks!

• Check that your code compiles by running npm run build
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• If this PR is for a user-facing feature, create and link a documentation ticket for this feature (usually in the same milestone as the linked issue). Style points if you create a documentation PR directly and link that instead.
• Check whether this PR disables tests. If it legitimately needs to disable a test, create a new ticket to re-enable it in a specific milestone.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud