Revert "Add egress shielding docs with redsocks + microsocks"

This reverts commit eea492dd64.

README.md

@@ -235,58 +235,6 @@ done
 
 This is the **inception** - each layer executes through unsandbox's remote API, so you can test any implementation using `un` (the canonical C implementation) as the runner.
 
-## Security: Egress Shielding
-
-Sandbox nodes route HTTP/HTTPS through tinyproxy, but raw TCP (SSH, etc.) goes out the direct egress IP. This matters for operational security - an attacker who can trigger outbound SSH could geolocate pool nodes.
-
-**Solution: Transparent proxy with redsocks + microsocks.**
-
-```
-┌─────────────────────────────────────────────────────┐
-│  Sandbox Node                                       │
-│                                                     │
-│  HTTP/HTTPS ──→ tinyproxy ──────→ egress proxy IP  │
-│                                                     │
-│  SSH/raw TCP ──→ redsocks ──→ microsocks ──→ same  │
-│                     ↑              egress proxy IP │
-│              (iptables nat)                         │
-└─────────────────────────────────────────────────────┘
-```
-
-redsocks intercepts ALL outbound TCP and routes through the SOCKS proxy. No per-app configuration needed.
-
-```bash
-# Install
-apt install redsocks
-git clone https://github.com/rofl0r/microsocks && cd microsocks && make
-
-# Run microsocks (SOCKS5 proxy)
-./microsocks -p 1080
-
-# Configure redsocks to use it
-cat > /etc/redsocks.conf <<EOF
-base { log_debug = off; log_info = off; daemon = on; }
-redsocks { local_ip = 127.0.0.1; local_port = 12345; ip = 127.0.0.1; port = 1080; type = socks5; }
-EOF
-
-# iptables: redirect all outbound TCP (except to proxy itself)
-iptables -t nat -N REDSOCKS
-iptables -t nat -A REDSOCKS -d 127.0.0.0/8 -j RETURN
-iptables -t nat -A REDSOCKS -p tcp -j REDIRECT --to-ports 12345
-iptables -t nat -A OUTPUT -p tcp -j REDSOCKS
-```
-
-Everything exits through one IP. Done.
-
-**What's shielded:**
-- All egress IPs - HTTP, SSH, everything
-
-**What works normally:**
-- Git over SSH (`git clone git@github.com:...`)
-- HTTP/HTTPS
-- All inbound connections (routed through sshpiper)
-- Everything inside the sandbox
-
 ## Links
 
 - [unsandbox.com](https://unsandbox.com) - Remote code execution API