ultralytics 8.0.174 Tuner plots and improvements (#4799)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

ultralytics/engine/model.py

@@ -361,7 +361,7 @@ class Model:
         else:
             from .tuner import Tuner
 
-            custom = {'plots': False, 'save': False}  # method defaults
+            custom = {}  # method defaults
             args = {**self.overrides, **custom, **kwargs, 'mode': 'train'}  # highest priority args on the right
             return Tuner(args=args, _callbacks=self.callbacks)(model=self, iterations=iterations)