remove dependence on _libgcc_mutex

[h-vetinari]

See conda-forge/_libgcc_mutex-feedstock#6

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe/meta.yaml:

• ℹ️ The recipe is not parsable by parser conda-souschef (grayskull). Your recipe may not receive automatic updates and/or may not be compatible with conda-forge's infrastructure. Please check the logs for more information and ensure your recipe can be parsed.
• ℹ️ The recipe is not parsable by parser conda-recipe-manager. Your recipe may not receive automatic updates and/or may not be compatible with conda-forge's infrastructure. Please check the logs for more information and ensure your recipe can be parsed.

_{This message was generated by GitHub Actions workflow run https://github.com/conda-forge/conda-forge-webservices/actions/runs/12287319061. Examine the logs at this URL for more detail.}

[h-vetinari]

Almost certainly needs conda-forge/docker-images#299

[h-vetinari]

Very strange - we can't create a bare environment with a sysroot matching the image in it? That package has no conflicting requirements with anything

+++ mamba create -n sysroot_linux-aarch64 --yes --quiet sysroot_linux-aarch64=2.34
warning  libmamba You have not set the root prefix environment variable.
    To permanently modify the root prefix location, either:
      - set the 'MAMBA_ROOT_PREFIX' environment variable
      - use the '-r,--root-prefix' CLI option
      - use 'mamba shell init ...' to initialize your shell
        (then restart or source the contents of the shell init script)
    Continuing with default value: "/opt/conda"
warning  libmamba Problem type not implemented SOLVER_RULE_STRICT_REPO_PRIORITY
error    libmamba Could not solve for environment specs
    The following package could not be installed
    └─ sysroot_linux-aarch64 =2.34 * is not installable because it conflicts with any installable versions previously reported.
critical libmamba Could not solve for environment specs

Related to conda-forge/conda-forge-ci-setup-feedstock#368