refactor: no longer need a strange typing import

Author: nedbat

coverage/tomlconfig.py

@@ -15,11 +15,6 @@
     import tomllib      # pylint: disable=import-error
 else:
     # TOML support on Python 3.10 and below is an install-time extra option.
-    # (Import typing is here because import_third_party will unload any module
-    # that wasn't already imported. tomli imports typing, and if we unload it,
-    # later it's imported again, and on Python 3.6, this causes infinite
-    # recursion.)
-    import typing   # pylint: disable=unused-import
     tomllib = import_third_party("tomli")