fft: remove boost dependency from clients

[evetsso]

Motivation

Remove boost dependency from FFT client programs, as it is no longer required.

Test Plan

Compile FFT libraries and clients and run regression tests.

Test Result

Tests pass.

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

❌ Your project status has failed because the head coverage (52.33%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3650      +/-   ##
===========================================
+ Coverage    49.15%   52.57%   +3.42%     
===========================================
  Files          134      134              
  Lines        33491    33477      -14     
  Branches      4399     4399              
===========================================
+ Hits         16461    17598    +1137     
+ Misses       15801    14612    -1189     
- Partials      1229     1267      +38     

Flag	Coverage Δ
hipFFT	54.32% <ø> (-3.64%)	⬇️
rocFFT	52.33% <ø> (+4.37%)	⬆️

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see 49 files with indirect coverage changes

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