remove asterix insertion into agent files

test/fixtures/agent-schema/invalid/menu-triggers/snake-case.agent.yaml

@@ -1,24 +0,0 @@
-# Test: Snake_case trigger
-# Expected: FAIL
-# Error code: custom
-# Error path: agent.menu[0].trigger
-# Error message: agent.menu[].trigger must be kebab-case (lowercase words separated by hyphen)
-
-agent:
-  metadata:
-    id: snake-case-trigger
-    name: Snake Case Trigger
-    title: Snake Case
-    icon: ❌
-
-  persona:
-    role: Test agent
-    identity: Test identity
-    communication_style: Test style
-    principles:
-      - Test principle
-
-  menu:
-    - trigger: list_tasks
-      description: Invalid snake_case trigger
-      action: list_tasks