Re-sync with internal repository (#1166)

Co-authored-by: Facebook Community Bot <6422482+facebook-github-bot@users.noreply.github.com>

lib/gtest/BUCK

@@ -1,34 +0,0 @@
-# Copyright (c) Facebook, Inc. and its affiliates.
-#
-# This source code is licensed under the MIT license found in the
-# LICENSE file in the root directory of this source tree.
-load("//tools/build_defs/oss:yoga_defs.bzl", "YOGA_ROOTS", "subdir_glob", "yoga_cxx_library", "yoga_prebuilt_cxx_library")
-
-COMPILER_FLAGS = [
-    "-std=c++14",
-    "-Wno-missing-prototypes",
-]
-
-yoga_prebuilt_cxx_library(
-    name = "pthread",
-    exported_linker_flags = [
-        "-lpthread",
-    ],
-    header_only = True,
-)
-
-yoga_cxx_library(
-    name = "gtest",
-    srcs = glob(["googletest/googletest/src/*.cc"]),
-    header_namespace = "",
-    exported_headers = subdir_glob([
-        ("googletest/googletest/include", "**/*.h"),
-        ("googletest/googletest", "src/*.h"),
-        ("googletest/googletest", "src/*.cc"),
-    ]),
-    compiler_flags = COMPILER_FLAGS,
-    visibility = YOGA_ROOTS,
-    deps = [
-        ":pthread",
-    ],
-)