Remove Vulnerability List from the sidepanel

What does this MR do?

Remove Vulnerability List from the sidepanel

• the security dashboard replaces this functionality
• remove it from the breadcrumb of the vulnerability page
• undoes work from edb35d13 and f45f6ede
• the docs have already been updated in another MR

Screenshots

Poor quality video recording that explains the changes (its find with the above screenshots to reference)

Remove_vulnerabilty_list_480p

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team

Related to #214034 (closed)