kunit: tool: remove unnecessary "annotations" import

The import was working around the fact "tuple[T]" was used instead of
typing.Tuple[T].

Convert it to use type.Tuple to be consistent with how the rest of the
code is anotated.

Signed-off-by: Daniel Latypov <[e-mail]>
Reviewed-by: David Gow <[e-mail]>
Reviewed-by: Brendan Higgins <[e-mail]>
Tested-by: Brendan Higgins <[e-mail]>
Signed-off-by: Shuah Khan <[e-mail]>

tools/testing/kunit/kunit_kernel.py

···
 # Author: Felix Guo <[e-mail]>
 # Author: Brendan Higgins <[e-mail]>
 
-from __future__ import annotations
 import importlib.util
 import logging
 import subprocess
 import os
 import shutil
 import signal
-from typing import Iterator
-from typing import Optional
+from typing import Iterator, Optional, Tuple
 
 from contextlib import ExitStack
 
···
 		raise ConfigError(arch + ' is not a valid arch')
 
 def get_source_tree_ops_from_qemu_config(config_path: str,
-					 cross_compile: Optional[str]) -> tuple[
+					 cross_compile: Optional[str]) -> Tuple[
 							 str, LinuxSourceTreeOperations]:
 	# The module name/path has very little to do with where the actual file
 	# exists (I learned this through experimentation and could not find it