fix removing quotes

backupbot.py

@@ -139,7 +139,7 @@ def run_commands(commands):
         command = command.removeprefix('bash -c').removeprefix('sh -c')
         # Remove quotes surrounding the command
         if (len(command) >= 2 and command[0] == command[-1] and (command[0] == "'" or command[0] == '"')):
-            command[1:-1]
+            command = command[1:-1]
         # Use bash's pipefail to return exit codes inside a pipe to prevent silent failure
         command = f"bash -c 'set -o pipefail;{command}'"
         logging.info(f"run command in {container.name}:")