chore: delete useless method

timestamp.py

@@ -1,7 +1,6 @@
 # -*- encoding: utf-8 -*-
 
 
-import os
 import sys
 import pytz
 import time
@@ -125,11 +124,6 @@ def format_timestamp(timestamp, _timezone=None):
     return datetime.fromtimestamp(timestamp, tz=_timezone).strftime("%Y-%m-%d %H:%M:%S")
 
 
-def copy_to_clipboard(value):
-    command = 'echo ' + str(value).strip() + '| clip'
-    os.system(command)
-
-
 def is_timestamp(value):
     strlen = len(value)
     '''support 10 or 13 length unixtime |支持10位或者13位unixtime'''