Remove unnecessary docs

Don't want to imply that using system-installed `copilot` is a good idea as the version can be wrong.

Author: SteveSandersonMS

nodejs/README.md

@@ -850,26 +850,6 @@ try {
 - Node.js >= 18.0.0
 - GitHub Copilot CLI installed and in PATH (or provide custom `cliPath`)
 
-### CJS / CommonJS Support
-
-The SDK ships both ESM and CJS builds. Node.js and bundlers (esbuild, webpack, etc.) automatically select the correct format via the `exports` field in `package.json`:
-
-- `import` / `from` → ESM (`dist/index.js`)
-- `require()` → CJS (`dist/cjs/index.cjs`)
-
-This means the SDK works out of the box in CJS environments such as VS Code extensions bundled with `esbuild format:"cjs"`.
-
-### System-installed CLI (winget, brew, apt)
-
-If you installed the Copilot CLI separately rather than relying on the SDK's bundled copy, pass `cliPath` explicitly:
-
-```typescript
-const client = new CopilotClient({
-    cliPath: '/usr/local/bin/copilot',   // macOS/Linux
-    // cliPath: 'C:\\path\\to\\copilot.exe', // Windows (winget, etc.)
-});
-```
-
 ## License
 
 MIT