Remove unused importlib-metadata dependency

Author: hukkin

pyproject.toml

@@ -15,7 +15,6 @@ requires-python = ">=3.10"
 dependencies = [
     'markdown-it-py>=1,<5',
     'tomli >=1.1.0; python_version < "3.11"',
-    'importlib-metadata >=3.6.0; python_version < "3.10"',
 ]
 readme = "README.md"
 classifiers = [

src/mdformat/renderer/_util.py

@@ -231,7 +231,7 @@ def escape_square_brackets(text: str, used_refs: Iterable[str]) -> str:
     enclosure_start: int | None = None
     while True:
         bracket_match = RE_SQUARE_BRACKET.search(text, pos)
-        if not bracket_match:  # pragma: >=3.10 cover
+        if not bracket_match:
             if enclosure_start is not None:
                 escape_before_pos.append(enclosure_start)
             break