testing: No need to handle direct_dependent_configs in GN build.

testing/test.gni

Index: testing/test.gni
diff --git a/testing/test.gni b/testing/test.gni
index a224ef2918ec5179c94021c1372ffa7ff79f3169..646d7170a66098fb75889523339cd7688827a9e7 100644
--- a/testing/test.gni
+++ b/testing/test.gni
@@ -72,9 +72,6 @@ template("test") {
       if (defined(invoker.deps)) {
         deps += invoker.deps
       }
-      if (defined(invoker.direct_dependent_configs)) {
-        direct_dependent_configs = invoker.direct_dependent_configs
-      }
       if (defined(invoker.forward_dependent_configs_from)) {
         forward_dependent_configs_from = invoker.forward_dependent_configs_from
       }
@@ -217,9 +214,6 @@ template("test") {
         "//build/win:default_exe_manifest",
       ]
 
-      if (defined(invoker.direct_dependent_configs)) {
-        direct_dependent_configs = invoker.direct_dependent_configs
-      }
       if (defined(invoker.forward_dependent_configs_from)) {
         forward_dependent_configs_from = invoker.forward_dependent_configs_from
       }