Remove unused variable 'hint_resolutions'

[KeyLee123]

• Removed the unused variable hint_resolutions from the resolve function.
• Directly used the dictionary comprehension to populate hint_references from hint.get_resolutions().
• Simplified the logic by eliminating an unnecessary intermediate variable.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 54.46%. Comparing base (bf9b3d5) to head (6b55d5a).
Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
avocado/core/resolver.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6062      +/-   ##
==========================================
+ Coverage   54.45%   54.46%   +0.01%     
==========================================
  Files         202      202              
  Lines       21885    21883       -2     
==========================================
+ Hits        11917    11919       +2     
+ Misses       9968     9964       -4     

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[richtja]

Hi @KeyLee123, thank you for the update it LGTM.