Remove unused _absl_test_platform_deps.

PiperOrigin-RevId: 405738888
Change-Id: I8d74a26f6ef33d8e0b3fabb8a5f1227e65e81ef9
diff --git a/absl/testing/BUILD b/absl/testing/BUILD
index cfc0690..e63e966 100644
--- a/absl/testing/BUILD
+++ b/absl/testing/BUILD
@@ -1,26 +1,5 @@
 licenses(["notice"])  # Apache 2.0
 
-config_setting(
-    name = "osx",
-    constraint_values = ["//third_party/bazel_platforms/os:osx"],
-)
-
-config_setting(
-    name = "ios",
-    flag_values = {"//tools/cpp:cc_target_os": "apple"},
-)
-
-_absl_test_platform_deps = select({
-    ":osx": [],
-    ":ios": [],
-    # TODO(b/75911467): Remove after :osx works in host mode
-    "//tools/cc_target_os:platform_macos": [],
-    "//conditions:default": [
-        "//third_party/py/faulthandler",
-        "//third_party/py/readline",  # Enables arrow keys and tab-completion in (pdb).
-    ],
-})
-
 py_library(
     name = "absltest",
     srcs = ["absltest.py"],