remove unreferenced widget

lib/pangea/lemmas/construct_xp_widget.dart

@@ -1,37 +0,0 @@
-import 'package:flutter/material.dart';
-
-import 'package:fluffychat/pangea/constructs/construct_level_enum.dart';
-
-class ConstructXpWidget extends StatelessWidget {
-  final ConstructLevelEnum level;
-  final int points;
-  final Widget icon;
-
-  const ConstructXpWidget({
-    super.key,
-    required this.level,
-    required this.points,
-    required this.icon,
-  });
-
-  @override
-  Widget build(BuildContext context) {
-    final Color textColor = Theme.of(context).brightness != Brightness.light
-        ? level.color(context)
-        : level.darkColor(context);
-
-    return Row(
-      spacing: 16.0,
-      mainAxisAlignment: MainAxisAlignment.center,
-      children: [
-        icon,
-        Text(
-          "$points XP",
-          style: Theme.of(context).textTheme.titleMedium?.copyWith(
-                color: textColor,
-              ),
-        ),
-      ],
-    );
-  }
-}