[LinearSystem.Direct] Remove metis dependency

[alxbilger]

Everything depending on Metis is now in moved in https://github.com/sofa-framework/Sofa.Metis

[ci-depends-on https://github.com/sofa-framework/CSparseSolvers/pull/3]

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I have read, understand, and agree SOFA Developer Certificate of Origin (DCO).

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Reviewers will merge this pull-request only if

• it builds with SUCCESS for all platforms on the CI.
• it does not generate new warnings.
• it does not generate new unit test failures.
• it does not generate new scene test failures.
• it does not break API compatibility.
• it is more than 1 week old (or has fast-merge label).

[alxbilger]

[ci-build][with-all-tests]

[sofabot]

[ci-depends-on] detected during build #3.

To unlock the merge button, you must

• Merge or close https://github.com/sofa-framework/CSparseSolvers/pull/3 _For this build, CSparseSolvers/ExternalProjectConfig.cmake.in will be edited by builders with GIT_REPOSITORY https://github.com/sofa-framework/CSparseSolvers GITTAG e5fe70ef40cd4086b1b9a9fd0f6c45a0344a4234

[sofabot]

[ci-depends-on] detected during build #4.

To unlock the merge button, you must

• Merge or close https://github.com/sofa-framework/CSparseSolvers/pull/3 _For this build, CSparseSolvers/ExternalProjectConfig.cmake.in will be edited by builders with GIT_REPOSITORY https://github.com/sofa-framework/CSparseSolvers GITTAG e5fe70ef40cd4086b1b9a9fd0f6c45a0344a4234

[sofabot]

[ci-depends-on] detected during build #5.

To unlock the merge button, you must

• Merge or close https://github.com/sofa-framework/CSparseSolvers/pull/3 _For this build, CSparseSolvers/ExternalProjectConfig.cmake.in will be edited by builders with GIT_REPOSITORY https://github.com/sofa-framework/CSparseSolvers GITTAG e5fe70ef40cd4086b1b9a9fd0f6c45a0344a4234

[alxbilger]

@fredroy yes this is the plan. Don't know yet if it will be in this PR or in another. Don't forget that https://github.com/sofa-framework/Sofa.Metis/pull/1 is to be reviewed as well.

[sofabot]

[ci-depends-on] detected during build #6.

To unlock the merge button, you must

• Merge or close https://github.com/sofa-framework/CSparseSolvers/pull/3 _For this build, CSparseSolvers/ExternalProjectConfig.cmake.in will be edited by builders with GIT_REPOSITORY https://github.com/sofa-framework/CSparseSolvers GITTAG e5fe70ef40cd4086b1b9a9fd0f6c45a0344a4234

[fredroy]

[ci-build][with-all-tests][force-full-build]

[sofabot]

[ci-depends-on] detected during build #7.

All dependencies are merged/closed and all ExternalProject pointers are up-to-date. Congrats! :+1:

[sofabot]

[ci-depends-on] detected during build #8.

All dependencies are merged/closed and all ExternalProject pointers are up-to-date. Congrats! :+1: