github: remove allowedTools restriction from claude-code-review

The whitelist was too restrictive, causing permission denials when
Claude tried to use basic tools like Read or Grep to analyse the diff.
Remove it and let the action use its default toolset.

Fixes: c0e75c9de6 ("github: add Claude code review workflow triggered by /claude comment")
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 29e1c7b85a)
Link: https://github.com/openwrt/openwrt/pull/24318
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

.github/workflows/claude-code-review.yml

@@ -33,6 +33,3 @@ jobs:
           prompt: >-
             Review this PR for an OpenWrt embedded Linux project,
             focusing on correctness, security, and coding conventions.
-          claude_args: >-
-            --allowedTools
-            "mcp__github_inline_comment__create_inline_comment,Bash(gh pr comment:*),Bash(gh pr diff:*),Bash(gh pr view:*)"