Re-sync with internal repository (#1166)

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

csharp/BUCK

@@ -1,42 +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:fb_native_wrapper.bzl", "fb_native")
-load(
-    "//tools/build_defs/oss:yoga_defs.bzl",
-    "BASE_COMPILER_FLAGS",
-    "yoga_apple_binary",
-    "yoga_cxx_library",
-    "yoga_dep",
-)
-
-COMPILER_FLAGS = BASE_COMPILER_FLAGS + ["-std=c++11"]
-
-fb_native.csharp_library(
-    name = "yogalibnet46",
-    srcs = glob(["**/*.cs"]),
-    dll_name = "Facebook.Yoga.dll",
-    framework_ver = "net46",
-)
-
-fb_native.csharp_library(
-    name = "yogalibnet45",
-    srcs = glob(["**/*.cs"]),
-    dll_name = "Facebook.Yoga.dll",
-    framework_ver = "net45",
-)
-
-yoga_cxx_library(
-    name = "yoganet",
-    srcs = ["Yoga/YGInterop.cpp"],
-    compiler_flags = COMPILER_FLAGS,
-    link_style = "static",
-    link_whole = True,
-    soname = "libyoga.$(ext)",
-    visibility = ["PUBLIC"],
-    deps = [yoga_dep(":yoga")],
-)
-
-yoga_apple_binary()