code-review-fix task 12.10: remove unused no-op Tooltip component

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/ui/tooltip.tsx

@@ -1,53 +0,0 @@
-"use client"
-
-import * as React from "react"
-import { cn } from "@/lib/utils"
-
-const TooltipProvider = React.forwardRef<
-  HTMLDivElement,
-  React.HTMLAttributes<HTMLDivElement>
->(({ children, ...props }, ref) => (
-  <div ref={ref} {...props}>
-    {children}
-  </div>
-))
-TooltipProvider.displayName = "TooltipProvider"
-
-const Tooltip = React.forwardRef<
-  HTMLDivElement,
-  React.HTMLAttributes<HTMLDivElement>
->(({ children, ...props }, ref) => (
-  <div ref={ref} {...props}>
-    {children}
-  </div>
-))
-Tooltip.displayName = "Tooltip"
-
-const TooltipTrigger = React.forwardRef<
-  HTMLButtonElement,
-  React.ButtonHTMLAttributes<HTMLButtonElement>
->(({ children, ...props }, ref) => (
-  <button ref={ref} {...props}>
-    {children}
-  </button>
-))
-TooltipTrigger.displayName = "TooltipTrigger"
-
-const TooltipContent = React.forwardRef<
-  HTMLDivElement,
-  React.HTMLAttributes<HTMLDivElement>
->(({ className, children, ...props }, ref) => (
-  <div
-    ref={ref}
-    className={cn(
-      "z-50 overflow-hidden rounded-md border bg-popover px-3 py-1.5 text-sm text-popover-foreground shadow-md animate-in fade-in-0 zoom-in-95",
-      className
-    )}
-    {...props}
-  >
-    {children}
-  </div>
-))
-TooltipContent.displayName = "TooltipContent"
-
-export { Tooltip, TooltipTrigger, TooltipContent, TooltipProvider }