Revert "[flatland] Shader warm-up."

This reverts commit a8c93c607eefe1baeaffeeefffa381d9e6b8f5fe.

Reason for revert: Broke screen capture tests fxb/114631 and  https://chat.google.com/room/AAAABFiUm4o/-y0dTACpxrI 

Original change's description:
> [flatland] Shader warm-up.
>
> Generate Vulkan render passes and pipelines during start-up to avoid
> runtime janks due to lazily generating them at runtime.
>
> Bug: 78186
> Fixed: 111708
>
> Change-Id: I6e429e37d7f1d3d3f71b08fee7c7fdabf0ae052b
> Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/746369
> Reviewed-by: Chris Fontas <cfontas@google.com>
> Commit-Queue: Josh Gargus <jjosh@google.com>

Bug: 78186
Change-Id: I35d88d5f7589646e9a00be27cd60680372c63814
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/756144
Reviewed-by: RubberStamper 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Commit-Queue: Vinicius Felizardo <felizardo@google.com>
18 files changed
tree: da5e6f764bdcb6afcb34b24fa8d2e8acce6a7d10
  1. boards/
  2. build/
  3. bundles/
  4. docs/
  5. examples/
  6. products/
  7. scripts/
  8. sdk/
  9. src/
  10. third_party/
  11. tools/
  12. zircon/
  13. .clang-format
  14. .clang-tidy
  15. .editorconfig
  16. .git-blame-ignore-revs
  17. .gitattributes
  18. .gitignore
  19. .gitmodules
  20. .gn
  21. .style.yapf
  22. analysis_options.yaml
  23. AUTHORS
  24. BUILD.gn
  25. CODE_OF_CONDUCT.md
  26. CONTRIBUTING.md
  27. ffx
  28. fuchsia.code-workspace
  29. LICENSE
  30. OWNERS
  31. PATENTS
  32. pyrightconfig.json
  33. README.md
  34. rustfmt.toml
README.md

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