Remove changes that we don't have permission to relicense

[nicholasbishop]

Checklist for authors/PRs/commits that we don't have relicensing approval for.

For each change, we'll need to resolve as follows:

• If the change has no creative component (e.g. a typo fix or simply matching
  arguments types to the UEFI spec) then no approval is needed and we can keep
  the change.
• If the change does have a creative component:
  • If it is not important from an API perspective (e.g. docstring addition) we
    can just revert it.
  • If it is important from an API perspective, we can revert and rewrite the
    change.

• @medhefgo:
  • allocator: Use appropriate memory types (2 commits)
    • loaded_image: Provide getters for memory types - API change
    • allocator: Use appropriate memory types - API change
  • uefi: Fix wrong install_configuration_table() signature - Bugfix + test changes
    • uefi: Fix wrong install_configuration_table() signature - Bugfix + test changes
    • uefi-test-runner: Fix buffer alignment on ia32 - Bugfix in test runner
    • uefi: Fix clippy hints - OK to keep: trivial clippy fixes.
  • uefi: Derive Eq for Handle
    • uefi: Derive Eq for Handle - OK to keep: trivial change to Derives.
  • loaded_image: Add set_unload
    • loaded_image: Add set_unload - API change
  • Export FileInfoCreationError
    • Export FileInfoCreationError - OK to keep: trivial change to visibility.
• @pavlus
  • Added BootServices::set_timer()
    • BootServices::set_timer wrapper - API change
• @supdrewin
  • Add support to get the file path of loaded image - The changes in this PR have already been substantially rewritten due to later DevicePath changes.
    • Add LoadedImage::file_path - API change
    • Change the type of file_path to *const DevicePath - API change
    • Check if the DevicePath is valid - API change
    • Merge branch 'rust-osdev:main' into main - OK to keep: empty merge commit.
  • DevicePathToText and DevicePathFromText Protocol
    • DevicePathToText and DevicePathFromText Protocol - API change
    • Replace parameters to wrapper. - API change
    • Add tests for convert text - Substantially rewritten in test-runner: Clean up device path tests #1527
    • Add PoolString to manage the string allocated by boot services - API change
    • Use pretty format for address - OK to keep: trivial change to error formatting.
• @zhangpf
  • Fix ucs2 dependency problem
    • Fix dependency problem - OK to keep: trivial deletion of a couple lines.

[nicholasbishop]

All done here. See linked PRs for code that was rewritten.