Remove setuptools/pkg_resources (#13369)

stubs/Pygments/pygments/plugin.pyi

@@ -1,7 +1,7 @@
-from collections.abc import Generator, Iterable
+import sys
+from collections.abc import Generator
 from typing import Any
 
-from pkg_resources import EntryPoint
 from pygments.filter import Filter
 from pygments.formatter import Formatter
 from pygments.lexer import Lexer
@@ -12,7 +12,15 @@ FORMATTER_ENTRY_POINT: str
 STYLE_ENTRY_POINT: str
 FILTER_ENTRY_POINT: str
 
-def iter_entry_points(group_name: str) -> Iterable[EntryPoint]: ...
+if sys.version_info >= (3, 10):
+    from importlib.metadata import EntryPoints
+    def iter_entry_points(group_name: str) -> EntryPoints: ...
+
+else:
+    from importlib.metadata import EntryPoint
+
+    def iter_entry_points(group_name: str) -> tuple[EntryPoint, ...] | list[EntryPoint]: ...
+
 def find_plugin_lexers() -> Generator[type[Lexer], None, None]: ...
 def find_plugin_formatters() -> Generator[tuple[str, type[Formatter[Any]]], None, None]: ...
 def find_plugin_styles() -> Generator[tuple[str, type[Style]], None, None]: ...