refactor: removed forest traits

[nimrod-starkware]

This change is 

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 29.54545% with 31 lines in your changes missing coverage. Please review.

Project coverage is 70.65%. Comparing base (616d9af) to head (aebf66c).

Files	Patch %	Lines
crates/committer/src/block_committer/commit.rs	0.00%	17 Missing ⚠️
...ter/src/patricia_merkle_tree/filled_tree/forest.rs	0.00%	8 Missing ⚠️
...rkle_tree/updated_skeleton_tree/skeleton_forest.rs	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #285      +/-   ##
==========================================
+ Coverage   70.55%   70.65%   +0.10%     
==========================================
  Files          38       38              
  Lines        2034     2021      -13     
  Branches     2034     2021      -13     
==========================================
- Hits         1435     1428       -7     
+ Misses        530      524       -6     
  Partials       69       69              

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[dorimedini-starkware]

Reviewed 8 of 8 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @TzahiTaub)