Disable warn_unused_ignores again (#60480)

Summary:
Fixes https://github.com/pytorch/pytorch/pull/60006#issuecomment-866130657.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/60480

Test Plan: Run `mypy --config mypy-strict.ini` with [`ruamel.yaml`](https://pypi.org/project/ruamel.yaml/) installed.

Reviewed By: zhouzhuojie

Differential Revision: D29307823

Pulled By: samestep

fbshipit-source-id: 97fa4b7dad0465c269411c48142b22ce751bf830

.github/scripts/lint_native_functions.py

@@ -26,7 +26,7 @@ def fn(base: str) -> str:
 with open(Path(__file__).parent.parent.parent / fn('.'), "r") as f:
     contents = f.read()
 
-yaml = ruamel.yaml.YAML()
+yaml = ruamel.yaml.YAML()  # type: ignore[attr-defined]
 yaml.preserve_quotes = True
 yaml.width = 1000
 yaml.boolean_representation = ['False', 'True']

mypy-strict.ini

@@ -19,7 +19,6 @@ disallow_any_unimported = True
 # Across versions of mypy, the flags toggled by --strict vary.  To ensure
 # we have reproducible type check, we instead manually specify the flags
 warn_unused_configs = True
-warn_unused_ignores = True
 disallow_any_generics = True
 disallow_subclassing_any = True
 disallow_untyped_calls = True
@@ -33,6 +32,10 @@ warn_return_any = True
 implicit_reexport = False
 strict_equality = True
 
+# do not reenable this:
+# https://github.com/pytorch/pytorch/pull/60006#issuecomment-866130657
+warn_unused_ignores = False
+
 files =
     .github,
     benchmarks/instruction_counts,

mypy.ini

@@ -6,13 +6,16 @@ plugins = mypy_plugins/check_mypy_version.py
 
 cache_dir = .mypy_cache/normal
 warn_unused_configs = True
-warn_unused_ignores = True
 warn_redundant_casts = True
 show_error_codes = True
 show_column_numbers = True
 check_untyped_defs = True
 follow_imports = silent
 
+# do not reenable this:
+# https://github.com/pytorch/pytorch/pull/60006#issuecomment-866130657
+warn_unused_ignores = False
+
 #
 # Note: test/ still has syntax errors so can't be added
 #