Reenable dpp_test.

END_PUBLIC
Test passes again.

*** Original change description ***

BEGIN_PUBLIC
Disables dpp_test.

PiperOrigin-RevId: 378403021

Author: Googler

tensorflow_probability/python/distributions/BUILD

@@ -2686,7 +2686,6 @@ multi_substrate_py_test(
     size = "medium",
     srcs = ["dpp_test.py"],
     shard_count = 5,
-    tf_tags = ["notap"],
     deps = [
         # absl/testing:parameterized dep,
         # numpy dep,