Remove check for snapshot enabled locally (#2876)

modal/sandbox.py

@@ -560,11 +560,6 @@ async def exec(
         return _ContainerProcess(resp.exec_id, self._client, stdout=stdout, stderr=stderr, text=text, by_line=by_line)
 
     async def _experimental_snapshot(self) -> _SandboxSnapshot:
-        if not self._enable_snapshot:
-            raise ValueError(
-                "Memory snapshots are not supported for this sandbox. To enable memory snapshots, "
-                "set `_experimental_enable_snapshot=True` when creating the sandbox."
-            )
         await self._get_task_id()
         snap_req = api_pb2.SandboxSnapshotRequest(sandbox_id=self.object_id)
         snap_resp = await retry_transient_errors(self._client.stub.SandboxSnapshot, snap_req)

test/sandbox_test.py

@@ -426,11 +426,6 @@ def test_sandbox_exec_stdout(app, servicer, capsys):
 
 @skip_non_subprocess
 def test_sandbox_snapshot(app, client, servicer):
-    invalid_sb = Sandbox.create(app=app)
-    with pytest.raises(ValueError):
-        # cannot snapshot a sandbox without memory snapshotting enabled
-        sandbox_snapshot = invalid_sb._experimental_snapshot()
-
     sb = Sandbox.create(app=app, _experimental_enable_snapshot=True)
     sandbox_snapshot = sb._experimental_snapshot()
     snapshot_id = sandbox_snapshot.object_id