Update pipenv/routines/update.py

Co-authored-by: Copilot <[email protected]>

Author: matteius

pipenv/routines/update.py

@@ -542,7 +542,6 @@ def upgrade(
 
     # Process each category
     requested_packages = defaultdict(dict)
-    category_resolutions = {}
 
     for category in categories:
         pipfile_category = get_pipfile_category_using_lockfile_section(category)