linnode inventory, remove redundant (#5438)

* remove redundant

templar is already in base class
env var is already consulted in via config resolution

* more whites

* no need to import templar again

* Add changelog fragment.

* Try to update tests.

Co-authored-by: Felix Fontein <felix@fontein.de>

tests/unit/plugins/inventory/test_linode.py

@@ -18,12 +18,15 @@ mandatory_py_version = pytest.mark.skipif(
 
 from ansible.errors import AnsibleError, AnsibleParserError
 from ansible.parsing.dataloader import DataLoader
+from ansible.template import Templar
 from ansible_collections.community.general.plugins.inventory.linode import InventoryModule
 
 
 @pytest.fixture(scope="module")
 def inventory():
-    return InventoryModule()
+    plugin = InventoryModule()
+    plugin.templar = Templar(loader=DataLoader())
+    return plugin
 
 
 def test_missing_access_token_lookup(inventory):