removed unneeded imports

micropip/_micropip.py

@@ -5,19 +5,14 @@
 import warnings
 from asyncio import gather
 from dataclasses import dataclass, field
-from importlib.metadata import Distribution,DistributionFinder
 from importlib.metadata import PackageNotFoundError
 from importlib.metadata import distributions as importlib_distributions
 from importlib.metadata import version as importlib_version
-from importlib.util import spec_from_loader,module_from_spec
-from importlib.machinery import ModuleSpec
 from pathlib import Path
 from sysconfig import get_platform
 from typing import IO, Any
 from urllib.parse import ParseResult, urlparse
 from zipfile import ZipFile
-import types
-import sys
 import site
 import os
 from textwrap import dedent