chore: remove unused guide generation command

Author: m-hulbert

.claude/commands/generate-guide.md

@@ -305,12 +305,6 @@ CLI command pages use **kebab-case** for argument and flag placeholders (for exa
 
 Tests use Jest with React Testing Library. Test files are colocated with source files as `*.test.tsx` or `*.test.ts`.
 
-## Custom Skills
-
-Custom slash commands live in `.claude/commands/`. Available commands:
-
-- `/generate-guide` — Generate an AI Transport guide from example code. Usage: `/generate-guide guides/ai-transport/{provider}-{pattern}`
-
 ## CI/CD
 
 - CI runs in CircleCI