fix(i18n): Remove duplicate key in settings localization

Author: zapp88

webview-ui/src/i18n/locales/en/settings.json

@@ -525,10 +525,6 @@
 			"name": "Enable AI-powered commit messages",
 			"description": "When enabled, Roo will use AI to generate commit messages based on the changes in the current branch."
 		},
-		"AI_COMMIT_MESSAGES": {
-			"name": "Enable AI-powered commit messages",
-			"description": "When enabled, Roo will use AI to generate commit messages based on the changes in the current branch."
-		},
 		"CONCURRENT_FILE_READS": {
 			"name": "Enable concurrent file reads",
 			"description": "When enabled, Roo can read multiple files in a single request. When disabled, Roo must read files one at a time. Disabling this can help when working with less capable models or when you want more control over file access."