chore(components): remove unused problem-related components

- Delete footer.tsx from problem/description
- Delete solution.tsx from problem/description
- Delete header.tsx from problem/workspace/editor/components

src/components/features/playground/problem/description/footer.tsx

@@ -1,23 +0,0 @@
-import { cn } from "@/lib/utils";
-
-interface ProblemDescriptionFooterProps {
-  title: string;
-  className?: string;
-}
-
-export default function ProblemDescriptionFooter({
-  title,
-  className,
-  ...props
-}: ProblemDescriptionFooterProps) {
-  return (
-    <footer
-      {...props}
-      className={cn("h-9 flex flex-none items-center bg-muted px-3 py-2", className)}
-    >
-      <div className="w-full flex items-center justify-center">
-        <span className="truncate">{title}</span>
-      </div>
-    </footer>
-  );
-}

src/components/features/playground/problem/solution/footer.tsx

@@ -1,23 +0,0 @@
-import { cn } from "@/lib/utils";
-
-interface ProblemSolutionFooterProps {
-  title: string;
-  className?: string;
-}
-
-export default function ProblemSolutionFooter({
-  title,
-  className,
-  ...props
-}: ProblemSolutionFooterProps) {
-  return (
-    <footer
-      {...props}
-      className={cn("h-9 flex flex-none items-center bg-muted px-3 py-2", className)}
-    >
-      <div className="w-full flex items-center justify-center">
-        <span className="truncate">{title}</span>
-      </div>
-    </footer>
-  );
-}

src/components/features/playground/workspace/editor/components/header.tsx

@@ -1,38 +0,0 @@
-import { cn } from "@/lib/utils";
-import { CopyButton } from "./copy-button";
-import { RedoButton } from "./redo-button";
-import { UndoButton } from "./undo-button";
-import { ResetButton } from "./reset-button";
-import { FormatButton } from "./format-button";
-import { LspStatusButton } from "./lsp-status-button";
-import { LanguageSelector } from "./language-selector";
-
-interface WorkspaceEditorHeaderProps {
-  className?: string;
-}
-
-export function WorkspaceEditorHeader({
-  className,
-  ...props
-}: WorkspaceEditorHeaderProps) {
-  return (
-    <header
-      {...props}
-      className={cn("flex items-center flex-none h-8 relative border-b", className)}
-    >
-      <div className="absolute flex w-full items-center justify-between px-2">
-        <div className="flex items-center">
-          <LanguageSelector />
-          <LspStatusButton />
-        </div>
-        <div className="flex items-center gap-x-2">
-          <ResetButton />
-          <UndoButton />
-          <RedoButton />
-          <FormatButton />
-          <CopyButton />
-        </div>
-      </div>
-    </header>
-  );
-}