Remove obsolete angle_end2end_tests_run target.

gpu/BUILD.gn

Index: gpu/BUILD.gn
diff --git a/gpu/BUILD.gn b/gpu/BUILD.gn
index 2233f76640efdcaccf60570a74ce431c3d7a4d8d..63447f15ebd7f465d732437c5168314c95c1d188 100644
--- a/gpu/BUILD.gn
+++ b/gpu/BUILD.gn
@@ -312,14 +312,3 @@ test("gpu_perftests") {
     "//ui/gl",
   ]
 }
-
-if (is_win || is_linux || is_mac) {
-  # TODO(GYP): Delete this after we've converted everything to GN.
-  # The _run targets exist only for compatibility w/ GYP.
-  group("angle_end2end_tests_run") {
-    testonly = true
-    deps = [
-      "//third_party/angle/src/tests:angle_end2end_tests",
-    ]
-  }
-}