tbdev turndown: No longer allow usage of tensorboard dev upload. (#6638)

In this step of the TensorBoard.dev turndown, we remove the ability to
upload via the `tensorboard dev upload` command.

Instead, when a user invokes `tensorboard dev upload`, we print the
following message, which is similar to the message we currently return
in the server info from TensorBoard.dev backends:

```
****************************************************************
****************************************************************
****************************************************************

Uploading TensorBoard logs to https://tensorboard.dev/ is no longer
supported.

TensorBoard.dev is shutting down.

Please export your experiments by Dec 31, 2023.

See the FAQ at https://tensorboard.dev.

****************************************************************
****************************************************************
****************************************************************
```

We also remove a bunch of upload-specific code.

Testing:
I tested the changes by trying some version of the following commands:
`bazel run tensorboard -- dev auth revoke`
`bazel run tensorboard -- dev upload`
`bazel run tensorboard -- dev list`
`bazel run tensorboard -- dev update-metadata`
`bazel run tensorboard -- dev delete`
`bazel run tensorboard -- dev export`

Author: bmd3k

tensorboard/uploader/BUILD

@@ -68,7 +68,6 @@ py_library(
     visibility = ["//tensorboard:internal"],
     deps = [
         ":auth",
-        ":dry_run_stubs",
         ":exporter",
         ":flags_parser",
         ":formatters",
@@ -79,7 +78,6 @@ py_library(
         "//tensorboard:expect_absl_logging_installed",
         "//tensorboard:expect_grpc_installed",
         "//tensorboard:program",
-        "//tensorboard/compat:tensorflow",
         "//tensorboard/plugins:base_plugin",
         "//tensorboard/uploader/proto:protos_all_py_pb2_grpc",
     ],
@@ -90,7 +88,6 @@ py_test(
     srcs = ["uploader_subcommand_test.py"],
     srcs_version = "PY3",
     deps = [
-        ":dry_run_stubs",
         ":server_info",
         ":uploader",
         ":uploader_subcommand",
@@ -104,21 +101,11 @@ py_library(
     srcs = ["uploader.py"],
     srcs_version = "PY3",
     deps = [
-        ":logdir_loader",
-        ":upload_tracker",
         ":util",
         "//tensorboard:expect_grpc_installed",
-        "//tensorboard:expect_protobuf_installed",
-        "//tensorboard/backend:process_graph",
-        "//tensorboard/backend/event_processing:directory_loader",
-        "//tensorboard/backend/event_processing:event_file_loader",
-        "//tensorboard/backend/event_processing:io_wrapper",
-        "//tensorboard/compat/proto:protos_all_py_pb2",
-        "//tensorboard/plugins/graph:metadata",
         "//tensorboard/uploader/proto:protos_all_py_pb2",
         "//tensorboard/util:grpc_util",
         "//tensorboard/util:tb_logging",
-        "//tensorboard/util:tensor_util",
     ],
 )
 
@@ -133,28 +120,15 @@ py_test(
     srcs = ["uploader_test.py"],
     srcs_version = "PY3",
     deps = [
-        ":dry_run_stubs",
         ":server_info",
         ":test_util",
-        ":upload_tracker",
         ":uploader",
-        ":util",
-        "//tensorboard:data_compat",
-        "//tensorboard:dataclass_compat",
         "//tensorboard:expect_grpc_installed",
         "//tensorboard:expect_grpc_testing_installed",
-        "//tensorboard:expect_protobuf_installed",
         "//tensorboard:expect_tensorflow_installed",
         "//tensorboard/compat:no_tensorflow",
-        "//tensorboard/compat/proto:protos_all_py_pb2",
-        "//tensorboard/plugins/graph:metadata",
-        "//tensorboard/plugins/histogram:summary_v2",
-        "//tensorboard/plugins/scalar:metadata",
-        "//tensorboard/plugins/scalar:summary_v2",
-        "//tensorboard/summary:summary_v1",
         "//tensorboard/uploader/proto:protos_all_py_pb2",
         "//tensorboard/uploader/proto:protos_all_py_pb2_grpc",
-        "//tensorboard/util:test_util",
     ],
 )
 
@@ -168,26 +142,6 @@ py_test(
     ],
 )
 
-py_library(
-    name = "dry_run_stubs",
-    srcs = ["dry_run_stubs.py"],
-    srcs_version = "PY3",
-    deps = [
-        "//tensorboard/uploader/proto:protos_all_py_pb2",
-    ],
-)
-
-py_test(
-    name = "dry_run_stubs_test",
-    srcs = ["dry_run_stubs_test.py"],
-    srcs_version = "PY3",
-    deps = [
-        ":dry_run_stubs",
-        "//tensorboard:test",
-        "//tensorboard/uploader/proto:protos_all_py_pb2",
-    ],
-)
-
 py_library(
     name = "auth",
     srcs = ["auth.py"],
@@ -257,8 +211,8 @@ py_test(
     name = "util_test",
     srcs = ["util_test.py"],
     deps = [
-        ":test_util",
         ":util",
+        "//tensorboard:expect_grpc_installed",
         "//tensorboard:expect_protobuf_installed",
         "//tensorboard:test",
     ],