[SE] Remove StreamExecutor

Summary:
The project has been renamed to Acxxel, so this old directory needs to
be deleted.

Reviewers: jlebar, jprice

Subscribers: beanz, mgorny, parallel_libs-commits, modocache

Differential Revision: https://reviews.llvm.org/D25964

llvm-svn: 285115
GitOrigin-RevId: b3f709e10f37225ae65c1d48c4623f6abc2cac1e
51 files changed
tree: 0009a6054f0aa269122f6e0e252e7e8a282ebbce
  1. .arcconfig
  2. .clang-format
  3. .clang-tidy
  4. CMakeLists.txt
  5. README.rst
  6. acxxel/