Remove NetClaw compatibility from README (#24)

Removed mention of NetClaw manifest.json for compatibility.

Signed-off-by: Aaron Stannard <aaron@petabridge.com>

Author: Aaronontheweb

README.md

@@ -13,7 +13,6 @@ SkillServer implements two complementary standards:
 
 - **[AgentSkills.io](https://agentskills.io)** - The SKILL.md format standard (originally by Anthropic)
 - **[Cloudflare Agent Skills Discovery RFC v0.2.0](https://github.com/cloudflare/agent-skills-spec)** - Discovery via `/.well-known/agent-skills/index.json`
-- **NetClaw manifest.json** - Backwards compatibility with existing NetClaw infrastructure
 
 ## Quick Start