fix: remove thinking mode (#835)

src/components/chat/constants/thinkingModes.ts

@@ -1,44 +0,0 @@
-import { Brain, Zap, Sparkles, Atom } from 'lucide-react';
-
-export const thinkingModes = [
-  {
-    id: 'none',
-    name: 'Standard',
-    description: 'Regular Claude response',
-    icon: null,
-    prefix: '',
-    color: 'text-gray-600'
-  },
-  {
-    id: 'think',
-    name: 'Think',
-    description: 'Basic extended thinking',
-    icon: Brain,
-    prefix: 'think',
-    color: 'text-blue-600'
-  },
-  {
-    id: 'think-hard',
-    name: 'Think Hard',
-    description: 'More thorough evaluation',
-    icon: Zap,
-    prefix: 'think hard',
-    color: 'text-purple-600'
-  },
-  {
-    id: 'think-harder',
-    name: 'Think Harder',
-    description: 'Deep analysis with alternatives',
-    icon: Sparkles,
-    prefix: 'think harder',
-    color: 'text-indigo-600'
-  },
-  {
-    id: 'ultrathink',
-    name: 'Ultrathink',
-    description: 'Maximum thinking budget',
-    icon: Atom,
-    prefix: 'ultrathink',
-    color: 'text-red-600'
-  }
-];