linode module utils: update import to recent Ansible level (#10906)

* linode module utils: update import to recent Ansible level

* add changelog frag

changelogs/fragments/10906-linode-modutils.yml

@@ -0,0 +1,2 @@
+minor_changes:
+  - linode module utils - remove redundant code for ancient versions of Ansible (https://github.com/ansible-collections/community.general/pull/10906).

plugins/module_utils/linode.py

@@ -11,11 +11,9 @@
 
 from __future__ import annotations
 
+from ansible.module_utils.ansible_release import __version__ as ansible_version
+
 
 def get_user_agent(module):
     """Retrieve a user-agent to send with LinodeClient requests."""
-    try:
-        from ansible.module_utils.ansible_release import __version__ as ansible_version
-    except ImportError:
-        ansible_version = 'unknown'
     return f'Ansible-{module}/{ansible_version}'