Remove Hysteria 2 from the panel for now.

Drop the protocol manager, UI, API routes, and related translations until it can be reintroduced cleanly.

Co-authored-by: Cursor <cursoragent@cursor.com>

translations/en.json

@@ -356,16 +356,6 @@
   "config_unavailable_desc": "This client was created via the native Amnezia app.\\nThe private key is stored only on the user's device and cannot be recovered by the server.",
   "client_public_key": "Client public key:",
   "telemt_desc": "MTProxy-based Telegram proxy with advanced obfuscation and TLS emulation support.",
-  "hysteria_desc": "Hysteria 2 (QUIC/UDP) via teddysun/hysteria with Let's Encrypt TLS. Admin sets the domain at install time.",
-  "hysteria_domain": "Domain",
-  "hysteria_email": "Let's Encrypt email",
-  "hysteria_port_hint": "UDP port for Hysteria (default 8998). Avoid 443 if nginx/xray already use UDP/TCP 443. Port 80/TCP must be free for certificate issuance.",
-  "hysteria_install_hint": "Point the domain A-record to this server before install. Port 80/TCP is used temporarily for Let's Encrypt HTTP-01 validation. BBR and salamander obfuscation are enabled automatically.",
-  "hysteria_dns_hint": "Create this DNS record before installation:",
-  "hysteria_settings_title": "Hysteria settings",
-  "hysteria_change_port": "Change port",
-  "hysteria_port_change_hint": "UDP listen port. If you see “address already in use”, pick a free port (e.g. 8443 or 8998), save, then re-import the client link.",
-  "hysteria_settings_saved": "Hysteria port updated",
   "container_logs": "Container logs",
   "logs_btn": "📋 Logs",
   "logs_live": "Live",