chore(i18n): drop the agent.tools form labels the removed field left behind

`check-i18n-bundles` flagged 4 drifted platform-objects bundles: the
metadata-form translations still carried a `tools` entry ("Tools" /
"Herramientas" / "ツール" / "工具", each with the "legacy mode" helpText)
for a form field this PR removed. Regenerated with
`scripts/check-i18n-bundles.mjs --write`; the diff is exactly those four
deletions, one per locale.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BHjroNkLkajskKbJaidko4

Author: claude

packages/platform-objects/src/apps/translations/en.metadata-forms.generated.ts

@@ -1618,10 +1618,6 @@ export const enMetadataForms: NonNullable<TranslationData['metadataForms']> = {
         label: "Skills",
         helpText: "Skill names (Agent→Skill→Tool architecture)"
       },
-      tools: {
-        label: "Tools",
-        helpText: "Direct tool references (legacy mode)"
-      },
       knowledge: {
         label: "Knowledge",
         helpText: "RAG knowledge access configuration"

packages/platform-objects/src/apps/translations/es-ES.metadata-forms.generated.ts

@@ -1618,10 +1618,6 @@ export const esESMetadataForms: NonNullable<TranslationData['metadataForms']> =
         label: "Habilidades",
         helpText: "Nombres de skill (arquitectura Agent→Skill→Tool)"
       },
-      tools: {
-        label: "Herramientas",
-        helpText: "Referencias directas a herramientas (modo heredado)"
-      },
       knowledge: {
         label: "Conocimiento",
         helpText: "Configuración de acceso a conocimiento RAG"

packages/platform-objects/src/apps/translations/ja-JP.metadata-forms.generated.ts

@@ -1618,10 +1618,6 @@ export const jaJPMetadataForms: NonNullable<TranslationData['metadataForms']> =
         label: "スキル",
         helpText: "スキル名（Agent→Skill→Tool アーキテクチャ）"
       },
-      tools: {
-        label: "ツール",
-        helpText: "直接ツール参照（レガシーモード）"
-      },
       knowledge: {
         label: "ナレッジ",
         helpText: "RAG ナレッジアクセス設定"

packages/platform-objects/src/apps/translations/zh-CN.metadata-forms.generated.ts

@@ -1618,10 +1618,6 @@ export const zhCNMetadataForms: NonNullable<TranslationData['metadataForms']> =
         label: "技能",
         helpText: "技能名称（Agent→Skill→Tool 架构）"
       },
-      tools: {
-        label: "工具",
-        helpText: "直接引用的工具（旧版模式）"
-      },
       knowledge: {
         label: "知识",
         helpText: "RAG 知识访问配置"