fix: Duplicated example dataset

[michael-s-molina]

SUMMARY

#28789 duplicated the wb_health_population dataset which made our command that load the example data to fail. This PR simply removes the only chart that referenced the duplicated dataset and also removes the YAML file that was the root cause for the duplication.

TESTING INSTRUCTIONS

Check the you're able to load the examples correctly.

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.64%. Comparing base (76d897e) to head (7aa5cfd).
Report is 966 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #29993       +/-   ##
===========================================
+ Coverage   60.48%   83.64%   +23.15%     
===========================================
  Files        1931      528     -1403     
  Lines       76236    38148    -38088     
  Branches     8568        0     -8568     
===========================================
- Hits        46114    31909    -14205     
+ Misses      28017     6239    -21778     
+ Partials     2105        0     -2105     

Flag	Coverage Δ
hive	48.95% <ø> (-0.22%)	⬇️
javascript	?
mysql	76.66% <ø> (?)
postgres	76.74% <ø> (?)
presto	53.50% <ø> (-0.30%)	⬇️
python	83.64% <ø> (+20.15%)	⬆️
sqlite	76.22% <ø> (?)
unit	60.31% <ø> (+2.68%)	⬆️

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[michael-s-molina]

/testenv up

[github-actions]

@michael-s-molina Ephemeral environment spinning up at http://54.244.13.91:8080. Credentials are admin/admin. Please allow several minutes for bootstrapping and startup.

[michael-s-molina]

@sadpandajoe @mistercrunch @eschutho @rusackas I confirmed that this PR also fixed the ephemeral environment problem.

[github-actions]

Ephemeral environment shutdown and build artifacts deleted.