chore: remove kitchen sink example

[heitorlessa]

Issue #, if available: #118

Description of changes:

Checklist

• Meet tenets criteria
• Update tests
• Update docs
• PR title follows conventional commit semantics

Breaking change checklist

RFC issue #:

• Migration process documented
• Implement warnings (if it can live side by side)

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

Codecov Report

Merging #180 into develop will decrease coverage by 0.13%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop     #180      +/-   ##
===========================================
- Coverage   100.00%   99.86%   -0.14%     
===========================================
  Files           52       52              
  Lines         2154     2154              
  Branches        97       97              
===========================================
- Hits          2154     2151       -3     
- Misses           0        3       +3     

Impacted Files	Coverage Δ
aws_lambda_powertools/tracing/extensions.py	25.00% <0.00%> (-75.00%)	⬇️

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[heitorlessa]

updated cookiecutter example with dummy example, and issues to enhance the example so it becomes a functional example over a kitchen sink: https://github.com/aws-samples/cookiecutter-aws-sam-python