refactor: remove unused event in tracking schema all

Author: ahnopologetic

tests/fixtures/tracking-schema-all.yaml

@@ -18,21 +18,6 @@ events:
         type: string
       is_free_trial:
         type: boolean
-  Update:
-    implementations:
-      - destination: snowplow
-        function: trackCartUpdate
-        line: 88
-        path: typescript-react/main.tsx
-    properties:
-      category:
-        type: string
-      label:
-        type: string
-      property:
-        type: string
-      value:
-        type: number
   some_event:
     implementations:
       - path: go/main.go