refactor: Remove unused files

[tilucasoli]

Description

This pull request removes several files and configurations from the project. The main goal is remove all unused files

[docs-page]

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docs.page/btwld/remix~2

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[github-actions]

LCOV of commit d393221 during Flutter CI #9

	(use "lcov --ignore-errors deprecated,deprecated ..." to suppress this warning)
Reading tracefile /tmp/__zgosalvez_github-actions-report-lcov/lcov.info.
Summary coverage rate:
  source files: 88
  lines.......: 57.1% (1916 of 3354 lines)
  functions...: no data found
  branches....: no data found
Message summary:
  1 warning message:
    deprecated: 1

Files changed coverage rate:
  	(use "lcov --ignore-errors deprecated,deprecated ..." to suppress this warning)
                                                                         |Lines       |Functions  |Branches    
  Filename                                                               |Rate     Num|Rate    Num|Rate     Num
  lib/src/components/feedback/progress/progress_style.dart               | 100%     11|    -     0|    -      0
  lib/src/components/form/select/select_style.dart                       | 100%     30|    -     0|    -      0