Remove plaintext telegram-notify secrets from git (n8n/portfolio/openclaw/polymarket-bot)

Phase 3c: hooks now read telegram-notify-infisical (synced from homelab/prod
/telegram). Deleting these 4 manifests prunes the old plaintext secrets — the
bot token leaves git for the remaining 4 namespaces. Completes migration #1.

NOTE: polymarket-bot/bot-secrets still embeds the same token (migration #3).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

n8n/secret-telegram-notify.yaml

@@ -1,9 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name: telegram-notify
-  namespace: n8n
-type: Opaque
-data:
-  TELEGRAM_BOT_TOKEN: ODYxMTkxMzgwMjpBQUZsckZ0YzB2WUlTT2xpT19XOEI0Yy1XMXVlMGhHOUZpbw==
-  TELEGRAM_CHAT_ID: NTEzODQwNzY2Ng==

openclaw/secret-telegram-notify.yaml

@@ -1,9 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name: telegram-notify
-  namespace: openclaw
-type: Opaque
-data:
-  TELEGRAM_BOT_TOKEN: ODYxMTkxMzgwMjpBQUZsckZ0YzB2WUlTT2xpT19XOEI0Yy1XMXVlMGhHOUZpbw==
-  TELEGRAM_CHAT_ID: NTEzODQwNzY2Ng==

polymarket-bot/secret-telegram-notify.yaml

@@ -1,9 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name: telegram-notify
-  namespace: polymarket-bot
-type: Opaque
-data:
-  TELEGRAM_BOT_TOKEN: ODYxMTkxMzgwMjpBQUZsckZ0YzB2WUlTT2xpT19XOEI0Yy1XMXVlMGhHOUZpbw==
-  TELEGRAM_CHAT_ID: NTEzODQwNzY2Ng==

portfolio/secret-telegram-notify.yaml

@@ -1,9 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name: telegram-notify
-  namespace: portfolio
-type: Opaque
-data:
-  TELEGRAM_BOT_TOKEN: ODYxMTkxMzgwMjpBQUZsckZ0YzB2WUlTT2xpT19XOEI0Yy1XMXVlMGhHOUZpbw==
-  TELEGRAM_CHAT_ID: NTEzODQwNzY2Ng==