去除重复maven引用

book-server/pom.xml

@@ -97,12 +97,6 @@
             <version>2.7</version>
         </dependency>
 
-        <!--httpClient-->
-        <dependency>
-            <groupId>org.apache.httpcomponents</groupId>
-            <artifactId>httpclient</artifactId>
-            <version>4.5.13</version>
-        </dependency>
         <!--email-->
         <dependency>
             <groupId>javax.mail</groupId>