chore: clean deprecated files

[utsabc]

What are the changes introduced in this PR?

This PR aims to remove legacy router code for file upload

What is the related Linear task?

Resolves INT-1181

Please explain the objectives of your changes below

Put down any required details on the broader aspect of your changes. If there are any dependent changes, mandatorily mention them here

Any changes to existing capabilities/behaviour, mention the reason & what are the changes ?

N/A

Any new dependencies introduced with this change?

N/A

Any new generic utility introduced or modified. Please explain the changes.

N/A

Any technical or performance related pointers to consider with the change?

N/A

@coderabbitai review

---

Developer checklist

• My code follows the style guidelines of this project

• No breaking changes are being introduced.

• All related docs linked with the PR?

• All changes manually tested?

• Any documentation changes needed with this change?

• Is the PR limited to 10 file changes?

• Is the PR limited to one linear task?

• Are relevant unit and component test-cases added in new readability format?

Reviewer checklist

• Is the type of change in the PR title appropriate as per the changes?

• Verified that there are no credentials or confidential data exposed with the changes.

[devops-github-rudderstack]

Test report for this run is available at: https://test-integrations-dev.s3.amazonaws.com/integrations-test-reports/rudder-transformer/3904/test-report.html

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.72%. Comparing base (0965f30) to head (37f8f19).
Report is 6 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3904      +/-   ##
===========================================
+ Coverage    90.48%   90.72%   +0.23%     
===========================================
  Files          615      617       +2     
  Lines        32359    32407      +48     
  Branches      7687     7694       +7     
===========================================
+ Hits         29281    29402     +121     
+ Misses        2822     2781      -41     
+ Partials       256      224      -32     

☔ View full report in Codecov by Sentry.
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[sonarqubecloud]

Quality Gate passed

Issues
19 New issues
1 Accepted issue

Measures
0 Security Hotspots
93.7% Coverage on New Code
1.4% Duplication on New Code

See analysis details on SonarQube Cloud

[devops-github-rudderstack]

This PR is considered to be stale. It has been open for 20 days with no further activity thus it is going to be closed in 7 days. To avoid such a case please consider removing the stale label manually or add a comment to the PR.

[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