[all-commits] [llvm/llvm-project] 15df9c: [libc++][ci] Clean up the Docker image

[Louis Dionne via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 15df9c9881aebf58dd54fb4e8dd1c1a77684fd7f
      https://github.com/llvm/llvm-project/commit/15df9c9881aebf58dd54fb4e8dd1c1a77684fd7f
  Author: Louis Dionne <ldionne.2 at gmail.com>
  Date:   2021-07-12 (Mon, 12 Jul 2021)

  Changed paths:
    M libcxx/utils/ci/Dockerfile

  Log Message:
  -----------
  [libc++][ci] Clean up the Docker image

- Remove symlinks that are not used anymore
- Stop installing GCC 10, which isn't tested anymore