Remove unused imports.

PiperOrigin-RevId: 491691298

tensorflow_federated/examples/custom_data_backend/BUILD

@@ -7,9 +7,6 @@ cc_library(
     name = "data_backend_example_cc",
     srcs = ["data_backend_example.cc"],
     hdrs = ["data_backend_example.h"],
-    tags = [
-        "nokokoro",  # b/193543632: C++ execution is not fully supported in OSS.
-    ],
     deps = [
         "//tensorflow_federated/cc/core/impl/executors:data_backend",
         "//tensorflow_federated/proto/v0:computation_cc_proto",
@@ -23,9 +20,6 @@ cc_library(
 pybind_extension(
     name = "data_backend_example_bindings",
     srcs = ["data_backend_example_bindings.cc"],
-    tags = [
-        "nokokoro",  # b/193543632: C++ execution is not fully supported in OSS.
-    ],
     deps = [
         ":data_backend_example_cc",
         "//tensorflow_federated/cc/core/impl/executors:data_backend",
@@ -44,9 +38,6 @@ py_library(
     name = "data_backend_example_py",
     srcs = ["data_backend_example.py"],
     srcs_version = "PY3",
-    tags = [
-        "nokokoro",  # b/193543632: C++ execution is not fully supported in OSS.
-    ],
     deps = [
         ":data_backend_example_bindings",
         "//tensorflow_federated",
@@ -60,9 +51,6 @@ py_test(
     data = ["@pybind11_abseil//pybind11_abseil:status.so"],
     python_version = "PY3",
     srcs_version = "PY3",
-    tags = [
-        "nokokoro",  # b/193543632: C++ execution is not fully supported in OSS.
-    ],
     deps = [
         ":data_backend_example_py",
         "//tensorflow_federated",