fix: remove unrelated IBM watsonx special case from diff settings

- Removed watsonx-specific logic from DiffSettingsControl component
- Removed 'advanced.diff.watsonx.description' translation key from all 18 language files
- IBM watsonx provider has nothing to do with diff settings

Author: daniel-lxs

webview-ui/src/components/settings/ApiOptions.tsx

@@ -837,7 +837,6 @@ const ApiOptions = ({
 						<DiffSettingsControl
 							diffEnabled={apiConfiguration.diffEnabled}
 							fuzzyMatchThreshold={apiConfiguration.fuzzyMatchThreshold}
-							provider={apiConfiguration.apiProvider}
 							onChange={(field, value) => setApiConfigurationField(field, value)}
 						/>
 						{selectedModelInfo?.supportsTemperature !== false && (

webview-ui/src/components/settings/DiffSettingsControl.tsx

@@ -6,14 +6,12 @@ import { VSCodeCheckbox } from "@vscode/webview-ui-toolkit/react"
 interface DiffSettingsControlProps {
 	diffEnabled?: boolean
 	fuzzyMatchThreshold?: number
-	provider?: string
 	onChange: (field: "diffEnabled" | "fuzzyMatchThreshold", value: any) => void
 }
 
 export const DiffSettingsControl: React.FC<DiffSettingsControlProps> = ({
 	diffEnabled = true,
 	fuzzyMatchThreshold = 1.0,
-	provider,
 	onChange,
 }) => {
 	const { t } = useAppTranslation()
@@ -39,9 +37,7 @@ export const DiffSettingsControl: React.FC<DiffSettingsControlProps> = ({
 					<span className="font-medium">{t("settings:advanced.diff.label")}</span>
 				</VSCodeCheckbox>
 				<div className="text-vscode-descriptionForeground text-sm">
-					{provider === "ibm-watsonx"
-						? t("settings:advanced.diff.watsonx.description")
-						: t("settings:advanced.diff.description")}
+					{t("settings:advanced.diff.description")}
 				</div>
 			</div>
 

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

@@ -709,9 +709,6 @@
 					"multiBlock": "Multi-block diff strategy allows updating multiple code blocks in a file in one request."
 				}
 			},
-			"watsonx": {
-				"description": "When enabled, Roo will be able to edit files more quickly and will automatically reject truncated full-file writes."
-			},
 			"matchPrecision": {
 				"label": "Match precision",
 				"description": "This slider controls how precisely code sections must match when applying diffs. Lower values allow more flexible matching but increase the risk of incorrect replacements. Use values below 100% with extreme caution."