Revert "Fix type errors after adding types to the py dependency"

This reverts commit 930a158a6a.

Regression test from Bruno Oliveira.

src/_pytest/config/argparsing.py

@@ -82,8 +82,8 @@ class Parser:
 
         self.optparser = self._getparser()
         try_argcomplete(self.optparser)
-        strargs = [str(x) if isinstance(x, py.path.local) else x for x in args]
-        return self.optparser.parse_args(strargs, namespace=namespace)
+        args = [str(x) if isinstance(x, py.path.local) else x for x in args]
+        return self.optparser.parse_args(args, namespace=namespace)
 
     def _getparser(self) -> "MyOptionParser":
         from _pytest._argcomplete import filescompleter
@@ -124,8 +124,8 @@ class Parser:
         the remaining arguments unknown at this point.
         """
         optparser = self._getparser()
-        strargs = [str(x) if isinstance(x, py.path.local) else x for x in args]
-        return optparser.parse_known_args(strargs, namespace=namespace)
+        args = [str(x) if isinstance(x, py.path.local) else x for x in args]
+        return optparser.parse_known_args(args, namespace=namespace)
 
     def addini(self, name, help, type=None, default=None):
         """ register an ini-file option.

src/_pytest/config/findpaths.py

@@ -1,9 +1,6 @@
 import os
-from typing import Any
-from typing import Iterable
 from typing import List
 from typing import Optional
-from typing import Tuple
 
 import py
 
@@ -63,7 +60,7 @@ def getcfg(args, config=None):
     return None, None, None
 
 
-def get_common_ancestor(paths: Iterable[py.path.local]) -> py.path.local:
+def get_common_ancestor(paths):
     common_ancestor = None
     for path in paths:
         if not path.exists():
@@ -116,7 +113,7 @@ def determine_setup(
     args: List[str],
     rootdir_cmd_arg: Optional[str] = None,
     config: Optional["Config"] = None,
-) -> Tuple[py.path.local, Optional[str], Any]:
+):
     dirs = get_dirs_from_args(args)
     if inifile:
         iniconfig = py.iniconfig.IniConfig(inifile)