Remove NetFX-specific dead code from DWriteForwarder compilation

[h3xds1nz]

Description

Removes utils file that's included in main but doesn't actually get compiled into the library as none of the code is used. It contains NetFX specific code anyways (including the undocumented COMPLUS_InstallRoot that can be used to swap NetFX path).

Customer Impact

Cleaner codebase for developers.

Regression

No.

Testing

Local build.

Risk

None, the code is NetFX-specific and unused.

Microsoft Reviewers: Open in CodeFlow

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 11.27290%. Comparing base (6514196) to head (02915e8).
Report is 3 commits behind head on main.

Additional details and impacted files

@@                 Coverage Diff                 @@
##                main      #10641         +/-   ##
===================================================
+ Coverage   11.22814%   11.27290%   +0.04476%     
===================================================
  Files           3352        3352                 
  Lines         668000      668027         +27     
  Branches       74980       74968         -12     
===================================================
+ Hits           75004       75306        +302     
+ Misses        591745      591466        -279     
- Partials        1251        1255          +4     

Flag	Coverage Δ
Debug	11.27290% <ø> (+0.04476%)	⬆️

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