[DELETE] 余計なファイルを削除しました。

src/main/java/com/example/demo/utility/Constant.java

@@ -1,5 +0,0 @@
-package com.example.demo.utility;
-
-public class Constant {
-
-}

src/main/java/com/example/demo/utility/TestController1.java

@@ -1,5 +0,0 @@
-package com.example.demo.utility;
-
-public class TestController1 {
-
-}

src/main/resources/static/css/transaction_detail.css

@@ -1,15 +0,0 @@
-.transaction-item {
-    display: flex;
-    align-items: center;
-    justify-content: space-between;
-}
-
-.transaction-buttons {
-    display: flex;
-    gap: 10px;
-    margin-right: 20px;
-}
-
-.transaction-buttons form {
-    margin: 0;
-}