Cleanup: remove unicode prefix, remove explicit inheritance from object (#11015)

* Address UP025: remove unicode literals from strings.

* Address UP004: class inherits from 'object'.

plugins/modules/npm.py

@@ -162,7 +162,7 @@ from ansible.module_utils.basic import AnsibleModule
 from ansible_collections.community.general.plugins.module_utils.cmd_runner import CmdRunner, cmd_runner_fmt
 
 
-class Npm(object):
+class Npm:
     def __init__(self, module, **kwargs):
         self.module = module
         self.glbl = kwargs['glbl']