Removing hack folder for bicep types generator

[sk593]

Description

This removes the hack folder for the bicep types generator. The hack folder was needed when we had a fork of Bicep but doesn't need to be there anymore.

Type of change

• This pull request is a minor refactor, code cleanup, test improvement, or other maintenance task and doesn't change the functionality of Radius (issue link optional).

Fixes: #issue_number

Contributor checklist

Please verify that the PR meets the following requirements, where applicable:

• An overview of proposed schema changes is included in a linked GitHub issue.
• A design document PR is created in the design-notes repository, if new APIs are being introduced.
• If applicable, design document has been reviewed and approved by Radius maintainers/approvers.
• A PR for the samples repository is created, if existing samples are affected by the changes in this PR.
• A PR for the documentation repository is created, if the changes in this PR affect the documentation or any user facing updates are made.
• A PR for the recipes repository is created, if existing recipes are affected by the changes in this PR.

[github-actions]

Unit Tests

3 562 tests  ±0   3 558 ✅ ±0   5m 15s ⏱️ -3s
  292 suites ±0       4 💤 ±0 
    1 files   ±0       0 ❌ ±0 

Results for commit e273f06. ± Comparison against base commit 16660a5.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.82%. Comparing base (16660a5) to head (e273f06).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8278      +/-   ##
==========================================
- Coverage   59.84%   59.82%   -0.02%     
==========================================
  Files         590      590              
  Lines       39520    39520              
==========================================
- Hits        23649    23643       -6     
- Misses      14117    14121       +4     
- Partials     1754     1756       +2     

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