Revert allowed-tools in gitea skill (was restricting, not granting)

The allowed-tools field in skills RESTRICTS which tools can be used,
not grants permission. The tea CLI permissions are already configured
in settings.json via permissions.allow.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

skills/gitea/SKILL.md

@@ -1,7 +1,6 @@
 ---
 name: gitea
 description: Gitea CLI (tea) for issues, pull requests, and repository management
-allowed-tools: Bash(tea:*)
 ---
 
 # Gitea CLI (tea)