Revert "remove tracked .class files"

This reverts commit c436a0e4ea.

exam-module-system/exam-module-system-api/.flattened-pom.xml

@@ -1,54 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>pc.exam.gg</groupId>
-  <artifactId>exam-module-system-api</artifactId>
-  <version>2.4.2-SNAPSHOT</version>
-  <name>exam-module-system-api</name>
-  <description>system 模块 API，暴露给其它模块调用</description>
-  <url>https://github.com/YunaiV/ruoyi-vue-pro/exam-module-system/exam-module-system-api</url>
-  <dependencies>
-    <dependency>
-      <groupId>pc.exam.gg</groupId>
-      <artifactId>exam-common</artifactId>
-      <version>2.4.2-SNAPSHOT</version>
-      <scope>compile</scope>
-    </dependency>
-    <dependency>
-      <groupId>org.springframework.boot</groupId>
-      <artifactId>spring-boot-starter-validation</artifactId>
-      <version>3.4.1</version>
-      <scope>compile</scope>
-      <optional>true</optional>
-    </dependency>
-  </dependencies>
-  <repositories>
-    <repository>
-      <id>huaweicloud</id>
-      <name>huawei</name>
-      <url>https://mirrors.huaweicloud.com/repository/maven/</url>
-    </repository>
-    <repository>
-      <id>aliyunmaven</id>
-      <name>aliyun</name>
-      <url>https://maven.aliyun.com/repository/public</url>
-    </repository>
-    <repository>
-      <snapshots>
-        <enabled>false</enabled>
-      </snapshots>
-      <id>spring-milestones</id>
-      <name>Spring Milestones</name>
-      <url>https://repo.spring.io/milestone</url>
-    </repository>
-    <repository>
-      <releases>
-        <enabled>false</enabled>
-      </releases>
-      <id>spring-snapshots</id>
-      <name>Spring Snapshots</name>
-      <url>https://repo.spring.io/snapshot</url>
-    </repository>
-  </repositories>
-</project>