add delete method to Trie

[swampholyten]

Pull Request Template

Description

This PR adds a delete method to the Trie data structure implementation.

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• I ran bellow commands using the latest version of rust nightly.
• I ran cargo clippy --all -- -D warnings just before my last commit and fixed any issue that was found.
• I ran cargo fmt just before my last commit.
• I ran cargo test just before my last commit and all tests passed.
• I added my algorithm to the corresponding mod.rs file within its own folder, and in any parent folder(s).
• I added my algorithm to DIRECTORY.md with the correct link.
• I checked COUNTRIBUTING.md and my code follows its guidelines.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.33%. Comparing base (4eec0b7) to head (7fc2766).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #901      +/-   ##
==========================================
+ Coverage   95.32%   95.33%   +0.01%     
==========================================
  Files         319      319              
  Lines       20807    20867      +60     
==========================================
+ Hits        19834    19894      +60     
  Misses        973      973              

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[github-actions]

This pull request has been automatically marked as abandoned because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[github-actions]

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