fix to fold and memory leaks

flares.py

@@ -1577,7 +1577,7 @@ def resource_path(relative_path):
 
 
 
-def fold_channels(raw: BaseRaw, progress_callback=None) -> None:
+def fold_channels(raw: BaseRaw) -> None:
 
     # if getattr(sys, 'frozen', False):
     path = os.path.expanduser("~") + "/mne_data/fOLD/fOLD-public-master/Supplementary"
@@ -1706,8 +1706,6 @@ def fold_channels(raw: BaseRaw, progress_callback=None) -> None:
 
             landmark_specificity_data = []
 
-            if progress_callback:
-                progress_callback(idx + 1)
 
     # TODO: Fix this
     if True: