السلام عليكم ورحمة الله وبركاته
جرب هذا التعديل اخى الكريم
Sub Delete_Old_Date()
Dim m As Long, r As Long, WS As Worksheet
Set WS = ThisWorkbook.Worksheets("آخر حركة انقطاع ")
Application.ScreenUpdating = False
m = WS.Cells(WS.Rows.Count, "A").End(xlUp).Row
For r = 2 To m
If Application.CountIf(WS.Range("A" & r & ":A" & m), WS.Cells(r, 1).Value) > 1 Then
WS.Rows(r).Delete
r = r - 1
End If
Next r
Application.ScreenUpdating = True
End Sub