Code cleanup

[SchrodingersGat]

• Remove TemplatePrintBase class
• Not referenced in code

[netlify]

✅ Deploy Preview for inventree-web-pui-preview canceled.

Name	Link
🔨 Latest commit	3555475
🔍 Latest deploy log	https://app.netlify.com/sites/inventree-web-pui-preview/deploys/678ed0d5fdca660008760c10

[matmair]

Discovered during dev of #8897

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.19%. Comparing base (f602c43) to head (3555475).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8931      +/-   ##
==========================================
+ Coverage   85.17%   85.19%   +0.02%     
==========================================
  Files        1175     1175              
  Lines       51808    51784      -24     
  Branches     2106     2106              
==========================================
- Hits        44127    44118       -9     
+ Misses       7147     7132      -15     
  Partials      534      534              

Flag	Coverage Δ
backend	86.98% <100.00%> (+0.02%)	⬆️

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