BB2-4848: Remove Dockerfile from project root to address security concerns

[JamesDemeryNava]

JIRA Ticket:
BB2-4848

What Does This PR Do?

Removes the Dockerfile from the project root, as it is no longer used, and contains security vulnerability.

What Should Reviewers Watch For?

If you're reviewing this PR, please check for these things in particular:

Validation

• Check out the branch
• Run make build-local, then make run-local. Ensure you can go through the testclient, do a refresh token flow through Postman, etc.

What Security Implications Does This PR Have?

Please indicate if this PR does any of the following:

• Adds any new software dependencies
• Modifies any security controls
• Adds new transmission or storage of data
• Any other changes that could possibly affect security?

• Yes, one or more of the above security implications apply. This PR must not be merged without the ISSO or team
  security engineer's approval.

Any Migrations?

• Yes, there are migrations
  • The migrations should be run PRIOR to the code being deployed
  • The migrations should be run AFTER the code is deployed
  • There is a more complicated migration plan (downtime,
    etc)
• No migrations

[bwang-icf]

Wouldn't we want to change the base image instead of adding it as a package here? Changing line 1 from python3.12 to something else? I know that might make it more involved since we'd have to test this other version and make sure it is backwards compatible.

[sb-DarenDean]

LGTM! We can have another Eng review & approve. But we are good. I already removed them from SNYK.