Visibility patch for the testing code is no longer needed. (#88)

More context in http://b/188226023

ci/temp_patches/tf_update_visibility.patch

@@ -32,35 +32,3 @@ index 22bcf2b1efd..6f27814f6a2 100644
          ":micro",
      ],
      deps = [
-diff --git a/tensorflow/lite/micro/testing/BUILD b/tensorflow/lite/micro/testing/BUILD
-index 6d8c74dd7e8..3dea5752f1e 100644
---- a/tensorflow/lite/micro/testing/BUILD
-+++ b/tensorflow/lite/micro/testing/BUILD
-@@ -1,8 +1,15 @@
-+load("//tensorflow:extra_rules.bzl", "tflm_kernel_friends")
-+
- package(
-     features = ["-layering_check"],
-     licenses = ["notice"],
- )
- 
-+package_group(
-+    name = "kernel_friends",
-+    packages = tflm_kernel_friends(),
-+)
-+
- package_group(
-     name = "micro",
-     packages = ["//tensorflow/lite/micro/..."],
-@@ -19,9 +26,10 @@ cc_library(
-         "micro_test.h",
-     ],
-     visibility = [
-+        ":kernel_friends",
-         ":micro",
-         ":microfrontend",
--    ],
-+    ],  # TODO(b/188226023)
-     deps = [
-         "//tensorflow/lite/c:common",
-         "//tensorflow/lite/core/api",