모바일 곡 상세: 뒤로가기 헤더 제거

frontend/src/pages/mobile/public/TrackDetail.jsx

@@ -102,19 +102,6 @@ function TrackDetail() {
             transition={{ duration: 0.3 }}
             className="pb-4"
         >
-            {/* 헤더 - 뒤로가기 */}
-            <div className="flex items-center gap-3 px-4 py-3 border-b border-gray-100">
-                <button 
-                    onClick={() => navigate(`/album/${encodeURIComponent(track.album?.title || albumName)}`)}
-                    className="p-1"
-                >
-                    <ChevronLeft size={24} className="text-gray-600" />
-                </button>
-                <div className="flex-1 min-w-0">
-                    <p className="text-xs text-gray-400">{track.album?.title}</p>
-                    <p className="font-medium truncate">{track.title}</p>
-                </div>
-            </div>
 
             {/* 트랙 정보 헤더 */}
             <div className="px-4 py-5">