message: Removing all unused targets under tensorflow/core/platform/default/build_config/BUILD.
  This helps pave the way for removing the build_config folder.
  This is part of the refactoring described in
diff: @@ -146,36 +146,6 @@ cc_library(
  copts = tf_copts(),
  )
  -cc_library(
  - name = "port",
  - srcs = [],
  - copts = tf_copts(),
  -)
  -
  -cc_library(
  - name = "protobuf",
  - srcs = [],
  - copts = tf_copts(),
  -)
  -
  -cc_library(
  - name = "env",
  - srcs = [],
  - copts = tf_copts(),
  -)
  -
  -cc_library(
  - name = "other",
  - srcs = [],
  - copts = tf_copts(),
  - deps = [
  - "@com_googlesource_code_re2//:re2",
  - "@farmhash_archive//:farmhash",
  - "@fft2d",
  - "@highwayhash//:sip_hash",
  - ],
  -)
  -
  cc_library(
  name = "platformlib",
  copts = tf_copts(),
  @@ -191,11 +161,6 @@ cc_library(
  ],
  )
  -cc_library(
  - name = "stacktrace",
  - srcs = [],
  -)
  -
  cc_library(
  name = "gif",
  copts = tf_copts(),
  @@ -221,13 +186,6 @@ cc_library(
  ],
  )
  -cc_library(
  - name = "test_lite_main",
  - testonly = 1,
  - linkstatic = 1,
  - deps = [],
  -)
  -
  cc_library(
  name = "test_main",
  testonly = 1,
  @@ -235,12 +193,6 @@ cc_library(
  deps = [],
  )
  -filegroup(
  - name = "android_proto_lib_portable_proto",
  - srcs = [],
  - visibility = ["//visibility:public"],
  -)
  -
  cc_library(
  name = "cuda",
  data = [
  