fix linter issues

modules/sd_hijack.py

@@ -5,7 +5,6 @@ from types import MethodType
 import modules.textual_inversion.textual_inversion
 from modules import devices, sd_hijack_optimizations, shared, script_callbacks, errors
 from modules.hypernetworks import hypernetwork
-from modules.sd_hijack_optimizations import diffusionmodules_model_AttnBlock_forward
 from modules.shared import cmd_opts
 from modules import sd_hijack_clip, sd_hijack_open_clip, sd_hijack_unet, sd_hijack_xlmr, xlmr
 

modules/sd_hijack_optimizations.py

@@ -9,7 +9,7 @@ from torch import einsum
 from ldm.util import default
 from einops import rearrange
 
-from modules import shared, errors, devices, sub_quadratic_attention, script_callbacks
+from modules import shared, errors, devices, sub_quadratic_attention
 from modules.hypernetworks import hypernetwork
 
 import ldm.modules.attention