移除多余引用

book-push/pom.xml

@@ -80,10 +80,6 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-undertow</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-undertow</artifactId>
-        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>