fix: drop unused journal1 variable to satisfy ruff F841

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: tobixen

tests/test_functional.py

@@ -203,7 +203,7 @@ def dag(obj, reltype, observed=None):
         assert len(ctx.obj['objs'])==0
 
         ## Journal tests
-        journal1 = _add_journal(ctx, summary=['bought new keyboard'], set_dtstart='2012-12-20')
+        _add_journal(ctx, summary=['bought new keyboard'], set_dtstart='2012-12-20')
         _select(ctx, journal=True)
         assert len(ctx.obj['objs'])==1
         _select(ctx, todo=True)