Simplify CI setup

Author: MacDue

.ci/generate-buildkite-pipeline-premerge

@@ -188,11 +188,6 @@ function check-targets() {
     libclc)
       echo "check-all"
     ;;
-    mlir)
-      for t in check-mlir check-mlir-python; do
-        echo $t
-      done
-    ;;
     *)
       echo "check-${project}"
     ;;

.ci/monolithic-linux.sh

@@ -50,8 +50,7 @@ cmake -S ${MONOREPO_ROOT}/llvm -B ${BUILD_DIR} \
       -D CMAKE_CXX_FLAGS=-gmlt \
       -D BOLT_CLANG_EXE=/usr/bin/clang \
       -D LLVM_CCACHE_BUILD=ON \
-      -D MLIR_ENABLE_BINDINGS_PYTHON=ON \
-      -D Python3_EXECUTABLE="$(which python3)"
+      -D MLIR_ENABLE_BINDINGS_PYTHON=ON
 
 echo "--- ninja"
 # Targets are not escaped as they are passed as separate arguments.

.ci/monolithic-windows.sh

@@ -49,8 +49,7 @@ cmake -S ${MONOREPO_ROOT}/llvm -B ${BUILD_DIR} \
       -D COMPILER_RT_BUILD_ORC=OFF \
       -D CMAKE_C_COMPILER_LAUNCHER=sccache \
       -D CMAKE_CXX_COMPILER_LAUNCHER=sccache \
-      -D MLIR_ENABLE_BINDINGS_PYTHON=ON \
-      -D Python3_EXECUTABLE="$(which python)"
+      -D MLIR_ENABLE_BINDINGS_PYTHON=ON
 
 echo "--- ninja"
 # Targets are not escaped as they are passed as separate arguments.