Improves readability of resolution display

Updates the format of resolution items displayed in the publisher's attribute for better readability.

Removes an unused import from server settings.

client/ayon_core/plugins/publish/collect_explicit_resolution.py

@@ -72,7 +72,9 @@ class CollectExplicitResolution(
             resolution_items = {}
             for item in cls.options:
                 item_text = (
-                    f"{item['width']}x{item['height']} ({item['pixel_aspect']})")
+                    f"{item['width']}x{item['height']} "
+                    f"({item['pixel_aspect']})"
+                )
                 resolution_items[item_text] = item
 
             cls.resolution_items = resolution_items

server/settings/publish_plugins.py

@@ -1,4 +1,3 @@
-from collections.abc import Iterable
 from pydantic import validator
 from typing import Any
 
@@ -221,7 +220,8 @@ class CollectExplicitResolutionModel(BaseSettingsModel):
         default_factory=list,
         title="Resolution choices",
         description=(
-            "Available resolution choices to be displayed in the publishers attribute."
+            "Available resolution choices to be displayed in "
+            "the publishers attribute."
         )
     )