cleanup/refactor state history

Signed-off-by: Vladimir Mandic <mandic00@live.com>

scripts/cogvideo.py

@@ -184,7 +184,6 @@ class Script(scripts_manager.Script):
 
     # auto-executed by the script-callback
     def run(self, p: processing.StableDiffusionProcessing, model, sampler, frames, guidance, offload, override, video_type, duration, loop, pad, interpolate, image, video): # pylint: disable=arguments-differ, unused-argument
-        shared.state.begin('CogVideoX')
         processing.fix_seed(p)
         p.extra_generation_params['CogVideoX'] = model
         p.do_not_save_grid = True
@@ -206,7 +205,6 @@ class Script(scripts_manager.Script):
         frames = self.generate(p, model)
         devices.torch_gc()
         processed = processing.get_processed(p, images_list=frames)
-        shared.state.end()
         return processed
 
     # auto-executed by the script-callback