books: Remove unused workdir() function.

conservancy_beancount/books.py

@@ -14,9 +14,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-import contextlib
 import datetime
-import os
 
 from pathlib import Path
 
@@ -38,15 +36,6 @@ from .beancount_types import (
 PathLike = Union[str, Path]
 Year = Union[int, datetime.date]
 
-@contextlib.contextmanager
-def workdir(path: PathLike) -> Iterator[Path]:
-    old_dir = os.getcwd()
-    os.chdir(path)
-    try:
-        yield Path(old_dir)
-    finally:
-        os.chdir(old_dir)
-
 class FiscalYear(NamedTuple):
     month: int = 3
     day: int = 1