test(ai-evals): drop global quote-heavy inline-code case

The manual global-mode A/B (Sonnet, Gemini 3 flash/pro, GPT-4o) showed no
pass-rate delta: the GPT-5 inline-escaping failure this change targets does
not reproduce on any available model, so the case guards nothing measurable.
Keep the unit tests as the regression guard instead.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

ai_evals/cases/global.yaml

@@ -1739,32 +1739,3 @@
     - creates an AI draft for the existing f/evals/global/format_greeting script with the exclamation-mark change
     - the draft changes only the returned message's punctuation — summary, language, path, and the rest of the code are untouched
     - does not deploy or save the draft to the workspace
-
-- id: global-flow-quote-heavy-inline-code
-  prompt: |-
-    Create a draft flow at `f/evals/global/welcome_email`.
-    It takes a `name` input and returns a multi-line HTML email body that welcomes the user:
-    a heading, a paragraph greeting the user by name, and an unordered list of three getting-started tips.
-    Leave it as an AI draft only; do not deploy or save it.
-  runtime:
-    maxTurns: 10
-  validate:
-    draftCountExactly: 1
-    requiredDrafts:
-      - type: flow
-        path: f/evals/global/welcome_email
-        valueIncludes:
-          - modules
-          - rawscript
-  toolExpect:
-    requiredToolsUsed:
-      - write_flow
-    forbiddenToolsUsed:
-      - deploy_workspace_item
-      - delete_workspace_item
-  judgeChecklist:
-    - creates a flow draft at f/evals/global/welcome_email
-    - the flow takes a name input and returns an HTML email body
-    - the returned HTML contains a heading, a paragraph that greets the user by name, and an unordered list of three getting-started tips
-    - the rawscript step actually contains the multi-line HTML code (it is not left empty or as a placeholder)
-    - the result stays as an AI draft and is not deployed or saved to the workspace