Update redunant description

docs/reference/configuration.md

@@ -886,7 +886,6 @@ their corresponding top-level category object in your `settings.json` file.
         "tier": "auto",
         "isPreview": true,
         "isVisible": true,
-        "dialogDescription": "Let Gemini CLI decide the best model for the task.",
         "features": {
           "thinking": true,
           "multimodalToolUse": false

packages/cli/src/config/settingsSchema.ts

@@ -3471,7 +3471,11 @@ export const SETTINGS_SCHEMA_DEFINITIONS: Record<
       family: { type: 'string' },
       isPreview: { type: 'boolean' },
       isVisible: { type: 'boolean' },
-      dialogDescription: { type: 'string' },
+      dialogDescription: {
+        type: 'string',
+        description:
+          "A description of the model to display in the model selection dialog. For the 'auto' alias, this value is dynamically generated and any value provided here will be ignored.",
+      },
       features: {
         type: 'object',
         properties: {

packages/core/src/config/defaultModelConfigs.ts

@@ -366,7 +366,6 @@ export const DEFAULT_MODEL_CONFIGS: ModelConfigServiceConfig = {
       tier: 'auto',
       isPreview: true,
       isVisible: true,
-      dialogDescription: 'Let Gemini CLI decide the best model for the task.',
       features: { thinking: true, multimodalToolUse: false },
     },
     pro: {