Remove footer from code-review plugin output

Remove the "Generated with Claude Code" footer and feedback CTA
from the code review comment template as it adds noise without
providing value after the first viewing.

plugins/code-review/commands/code-review.md

@@ -93,11 +93,6 @@ Found 3 issues:
 
 <link to file and line with full sha1 + line range for context>
 
-🤖 Generated with [Claude Code](https://claude.ai/code)
-
-
-<sub>- If this code review was useful, please react with 👍. Otherwise, react with 👎.</sub>
-
 ---
 
 - Or, if you found no issues:
@@ -108,8 +103,6 @@ Found 3 issues:
 
 No issues found. Checked for bugs and CLAUDE.md compliance.
 
-🤖 Generated with [Claude Code](https://claude.ai/code)
-
 ---
 
 - When linking to code, follow the following format precisely, otherwise the Markdown preview won't render correctly: https://github.com/anthropics/claude-code/blob/c21d3c10bc8e898b7ac1a2d745bdc9bc4e423afe/package.json#L10-L15