Removed duplicate statements from seeds file

[rimashah25]

Not related to any issue but a clean up of seeds.sql file

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Which Traffic Control components are affected by this PR?

• Traffic Ops DB

What is the best way to verify this PR?

If this is a bugfix, which Traffic Control versions contained the bug?

PR submission checklist

• This PR has tests
• This PR has documentation
• This PR has a CHANGELOG.md entry
• This PR DOES NOT FIX A SERIOUS SECURITY VULNERABILITY (see the Apache Software Foundation's security guidelines for details)

[codecov]

Codecov Report

Merging #7790 (1d66988) into master (75ec56f) will increase coverage by 0.57%.
Report is 118 commits behind head on master.
The diff coverage is 74.17%.

@@             Coverage Diff              @@
##             master    #7790      +/-   ##
============================================
+ Coverage     65.05%   65.62%   +0.57%     
  Complexity       98       98              
============================================
  Files           314      323       +9     
  Lines         12365    12833     +468     
  Branches        907      965      +58     
============================================
+ Hits           8044     8422     +378     
- Misses         3968     4051      +83     
- Partials        353      360       +7     

Flag	Coverage Δ
traffic_portal_v2	74.39% <74.17%> (+0.61%)	⬆️
unit_tests	74.39% <74.17%> (+0.61%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
cache-config/t3c-generate/config/config.go	0.89% <ø> (ø)
cache-config/t3c-generate/t3c-generate.go	0.00% <ø> (ø)
experimental/traffic-portal/src/app/api/index.ts	100.00% <ø> (ø)
...mental/traffic-portal/src/app/api/testing/index.ts	100.00% <ø> (ø)
...perimental/traffic-portal/src/app/app.ui.module.ts	100.00% <ø> (ø)
...tatuses/statuses-table/statuses-table.component.ts	82.35% <ø> (ø)
...al/src/app/shared/interceptor/error.interceptor.ts	3.12% <0.00%> (-0.21%)	⬇️
...tal/traffic-portal/src/app/shared/shared.module.ts	100.00% <ø> (ø)
experimental/traffic-portal/src/app/utils/index.ts	100.00% <ø> (ø)
...tal/traffic-portal/src/environments/environment.ts	100.00% <ø> (ø)
... and 60 more

... and 3 files with indirect coverage changes

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