[bazel] Undo LSP changes after revert (#157691)

Reverted in 31bee3421ba48898b0c7c8f3710f9d1bac22cad7
diff --git a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
index e6f10b0..b042c18 100644
--- a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
@@ -228,7 +228,6 @@
         "lib/Support/*.cpp",
         "lib/Support/*.h",
         "lib/Support/*.inc",
-        "lib/Support/LSP/*.cpp",
         # To avoid a dependency cycle.
         "include/llvm/Option/*.h",
     ]) + select({
diff --git a/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel b/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
index 628a720..3fa62bf 100644
--- a/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
@@ -794,23 +794,6 @@
 )
 
 cc_test(
-    name = "SupportLSPTests",
-    size = "small",
-    srcs = glob(["Support/LSP/*.cpp"]),
-    copts = [
-        "$(STACK_FRAME_UNLIMITED)",
-    ],
-    linkstatic = 1,
-    deps = [
-        "//llvm:Support",
-        "//llvm:config",
-        "//third-party/unittest:gmock",
-        "//third-party/unittest:gtest",
-        "//third-party/unittest:gtest_main",
-    ],
-)
-
-cc_test(
     name = "tablegen_tests",
     size = "small",
     srcs = glob(