docs: remove stale TOOLS.md references (#1388)

TOOLS.md was intentionally removed in 21d60f6 and #771, as tools are
now provided to the LLM via JSON schema through ToProviderDefs().
These references were missed during that cleanup.

Suggested by @yinwm in #1355.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

README.fr.md

@@ -649,7 +649,6 @@ PicoClaw stocke les données dans votre workspace configuré (par défaut : `~/.
 ├── HEARTBEAT.md      # Invites de tâches périodiques (vérifiées toutes les 30 min)
 ├── IDENTITY.md       # Identité de l'Agent
 ├── SOUL.md           # Âme de l'Agent
-├── TOOLS.md          # Description des outils
 └── USER.md           # Préférences utilisateur
 ```
 

README.ja.md

@@ -610,7 +610,6 @@ PicoClaw は設定されたワークスペース（デフォルト: `~/.picoclaw
 ├── HEARTBEAT.md       # 定期タスクプロンプト（30分ごとに確認）
 ├── IDENTITY.md        # エージェントのアイデンティティ
 ├── SOUL.md            # エージェントのソウル
-├── TOOLS.md           # ツールの説明
 └── USER.md            # ユーザー設定
 ```
 

README.md

@@ -787,7 +787,6 @@ PicoClaw stores data in your configured workspace (default: `~/.picoclaw/workspa
 ├── HEARTBEAT.md      # Periodic task prompts (checked every 30 min)
 ├── IDENTITY.md       # Agent identity
 ├── SOUL.md           # Agent soul
-├── TOOLS.md          # Tool descriptions
 └── USER.md           # User preferences
 ```
 

README.pt-br.md

@@ -645,7 +645,6 @@ O PicoClaw armazena dados no workspace configurado (padrão: `~/.picoclaw/worksp
 ├── HEARTBEAT.md       # Prompts de tarefas periodicas (verificado a cada 30 min)
 ├── IDENTITY.md        # Identidade do Agente
 ├── SOUL.md            # Alma do Agente
-├── TOOLS.md           # Descrição das ferramentas
 └── USER.md            # Preferencias do usuario
 ```
 

README.vi.md

@@ -617,7 +617,6 @@ PicoClaw lưu trữ dữ liệu trong workspace đã cấu hình (mặc định:
 ├── HEARTBEAT.md      # Prompt tác vụ định kỳ (kiểm tra mỗi 30 phút)
 ├── IDENTITY.md       # Danh tính Agent
 ├── SOUL.md           # Tâm hồn/Tính cách Agent
-├── TOOLS.md          # Mô tả công cụ
 └── USER.md           # Tùy chọn người dùng
 ```
 

README.zh.md

@@ -365,7 +365,6 @@ PicoClaw 将数据存储在您配置的工作区中（默认：`~/.picoclaw/work
 ├── HEARTBEAT.md      # 周期性任务提示词 (每 30 分钟检查一次)
 ├── IDENTITY.md       # Agent 身份设定
 ├── SOUL.md           # Agent 灵魂/性格
-├── TOOLS.md          # 工具描述
 └── USER.md           # 用户偏好
 
 ```

pkg/migrate/sources/openclaw/common.go

@@ -4,7 +4,6 @@ var migrateableFiles = []string{
 	"AGENTS.md",
 	"SOUL.md",
 	"USER.md",
-	"TOOLS.md",
 	"HEARTBEAT.md",
 }