Remove duplicate import

Author: antonio-rojas

src/sage/cli/run_file_cmd.py

@@ -35,7 +35,6 @@ def __init__(self, options: CliOptions):
         """
         self.options = options
         # shift sys.argv for compatibility with the old sage bash script and python command when consuming arguments from the command line
-        import sys
         del sys.argv[0]
 
     def run(self) -> int: