LLVM/project 1fe8e2bmlir/include/mlir InitAllDialects.h, mlir/include/mlir/Dialect CMakeLists.txt

Revert "[mlir] Initial patch to add an MPI dialect (#68892)" (#81884)

This reverts commit 2d616ec4f040141e103965f98456ba523762735d.

Buildbot failures:
https://lab.llvm.org/buildbot/#/builders/177/builds/29364
DeltaFile
+0-218mlir/include/mlir/Dialect/MPI/IR/MPI.td
+0-189mlir/include/mlir/Dialect/MPI/IR/MPIOps.td
+0-56mlir/lib/Dialect/MPI/IR/MPI.cpp
+0-43mlir/include/mlir/Dialect/MPI/IR/MPITypes.td
+0-35mlir/test/Dialect/MPI/ops.mlir
+0-33mlir/include/mlir/Dialect/MPI/IR/MPI.h
+0-22mlir/include/mlir/Dialect/MPI/IR/CMakeLists.txt
+0-21mlir/lib/Dialect/MPI/IR/MPIOps.cpp
+0-19mlir/lib/Dialect/MPI/IR/CMakeLists.txt
+0-2mlir/include/mlir/InitAllDialects.h
+0-1mlir/lib/Dialect/MPI/CMakeLists.txt
+0-1mlir/lib/Dialect/CMakeLists.txt
+0-1mlir/include/mlir/Dialect/CMakeLists.txt
+0-1mlir/include/mlir/Dialect/MPI/CMakeLists.txt
+0-64214 files

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