cleanup linters: get rid of pylint-pytest, run pylint only on dvc/ directory, etc (#8822)

* cleanup linters: get rid of pylint-pytest, run pylint only on dvc/ directory, etc.

* remove pylint direcitves

* Apply suggestions from code review

* Update pyproject.toml

tests/func/test_add.py

@@ -555,7 +555,6 @@ def temporary_windows_drive(tmp_path_factory):
     from ctypes import windll
 
     try:
-        # pylint: disable=import-error
         import win32api
         from win32con import DDD_REMOVE_DEFINITION
     except ImportError:
@@ -890,7 +889,7 @@ def test_add_preserve_fields(tmp_dir, dvc):
 # are the same 260 chars, which makes the test unnecessarily complex
 @pytest.mark.skipif(os.name == "nt", reason="unsupported on Windows")
 def test_add_long_fname(tmp_dir, dvc):
-    name_max = os.pathconf(tmp_dir, "PC_NAME_MAX")  # pylint: disable=no-member
+    name_max = os.pathconf(tmp_dir, "PC_NAME_MAX")
     name = "a" * name_max
     tmp_dir.gen({"data": {name: "foo"}})