SP dataloader patching + removing custom sampler / dataloader logic (#2686)

* utilize accelerate prepare_data_loader with patching

* lint

* cleanup, fix

* update to support DPO quirk

* small change

* coderabbit commits, cleanup, remove dead code

* quarto fix

* patch fix

* review comments

* moving monkeypatch up one level

* fix

tests/e2e/patched/test_sp.py

@@ -10,7 +10,7 @@ import pytest
 import torch
 from accelerate.state import PartialState
 
-from axolotl.monkeypatch.attention.ring_attn import (
+from axolotl.monkeypatch.ring_attn import (
     get_ring_attn_group,
     register_ring_attn,
     set_ring_attn_group,
@@ -313,13 +313,13 @@ class TestApplySequenceParallelism:
 
         # Mock the process group
         monkeypatch.setattr(
-            "axolotl.monkeypatch.attention.ring_attn.get_ring_attn_group",
+            "axolotl.monkeypatch.ring_attn.get_ring_attn_group",
             MagicMock,
         )
 
         # Mock update_ring_attn_params
         monkeypatch.setattr(
-            "axolotl.monkeypatch.attention.ring_attn.update_ring_attn_params",
+            "axolotl.monkeypatch.ring_attn.update_ring_attn_params",
             lambda **kwargs: None,
         )