chore: Remove the amplify-tools tree

[mattcreaser]

• PR title and description conform to Pull Request guidelines.

Issue #, if available:

Description of changes:
This code was for a long-dead gradle plugin

How did you test these changes?
(Please add a line here how the changes were tested)

Documentation update required?

• No
• Yes (Please include a PR link for the documentation update)

General Checklist

• Added Unit Tests
• Added Integration Tests
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 42.00%. Comparing base (ed8389b) to head (eeaabd5).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3035      +/-   ##
==========================================
+ Coverage   41.96%   42.00%   +0.04%     
==========================================
  Files         992      992              
  Lines       31542    31546       +4     
  Branches     4645     4648       +3     
==========================================
+ Hits        13237    13252      +15     
+ Misses      16860    16833      -27     
- Partials     1445     1461      +16     

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