diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 8ecaf1019..4031b8001 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -1558,12 +1558,6 @@ class Coder:
         files = [self.abs_root_path(path) for path in files]
         return files
 
-    def get_last_modified(self):
-        files = [Path(fn) for fn in self.get_all_abs_files() if Path(fn).exists()]
-        if not files:
-            return 0
-        return max(path.stat().st_mtime for path in files)
-
     def get_addable_relative_files(self):
         all_files = set(self.get_all_relative_files())
         inchat_files = set(self.get_inchat_relative_files())
diff --git a/tests/basic/test_coder.py b/tests/basic/test_coder.py
index 2a0be1a28..294cbe4ee 100644
--- a/tests/basic/test_coder.py
+++ b/tests/basic/test_coder.py
@@ -95,29 +95,6 @@ class TestCoder(unittest.TestCase):
             self.assertTrue(coder.allowed_to_edit("added.txt"))
             self.assertTrue(coder.need_commit_before_edits)
 
-    def test_get_last_modified(self):
-        # Mock the IO object
-        mock_io = MagicMock()
-
-        with GitTemporaryDirectory():
-            repo = git.Repo(Path.cwd())
-            fname = Path("new.txt")
-            fname.touch()
-            repo.git.add(str(fname))
-            repo.git.commit("-m", "new")
-
-            # Initialize the Coder object with the mocked IO and mocked repo
-            coder = Coder.create(self.GPT35, None, mock_io)
-
-            mod = coder.get_last_modified()
-
-            fname.write_text("hi")
-            mod_newer = coder.get_last_modified()
-            self.assertLess(mod, mod_newer)
-
-            fname.unlink()
-            self.assertEqual(coder.get_last_modified(), 0)
-
     def test_get_files_content(self):
         tempdir = Path(tempfile.mkdtemp())