Revert "[bazel] Add rules_shell for sh_binary rule (llvm#158365)"

This reverts commit f645d20.

Author: qedawkins

utils/bazel/WORKSPACE

@@ -199,17 +199,3 @@ python_register_toolchains(
     name = "python_3_12",
     python_version = "3.12",
 )
-
-maybe(
-    http_archive,
-    name = "rules_shell",
-    sha256 = "e6b87c89bd0b27039e3af2c5da01147452f240f75d505f5b6880874f31036307",
-    strip_prefix = "rules_shell-0.6.1",
-    url = "https://github.com/bazelbuild/rules_shell/releases/download/v0.6.1/rules_shell-v0.6.1.tar.gz",
-)
-
-load("@rules_shell//shell:repositories.bzl", "rules_shell_dependencies", "rules_shell_toolchains")
-
-rules_shell_dependencies()
-
-rules_shell_toolchains()

utils/bazel/llvm-project-overlay/llvm/BUILD.bazel

@@ -6,7 +6,6 @@ load("@bazel_skylib//rules:common_settings.bzl", "string_flag")
 load("@bazel_skylib//rules:expand_template.bzl", "expand_template")
 load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
 load("@rules_python//python:defs.bzl", "py_binary")
-load("@rules_shell//shell:sh_binary.bzl", "sh_binary")
 load("//mlir:tblgen.bzl", "gentbl_cc_library", "gentbl_filegroup", "td_library")
 load(":binary_alias.bzl", "binary_alias")
 load(":config.bzl", "llvm_config_defines")