Fix pom.xml error of sentinel-transport

Signed-off-by: Eric Zhao <sczyh16@gmail.com>

sentinel-transport/pom.xml

@@ -17,26 +17,4 @@
         <module>sentinel-transport-simple-http</module>
         <module>sentinel-transport-netty-http</module>
     </modules>
-
-    <dependencyManagement>
-        <dependencies>
-            <dependency>
-                <groupId>com.alibaba.csp</groupId>
-                <artifactId>sentinel-core</artifactId>
-                <version>${project.version}</version>
-            </dependency>
-            <dependency>
-                <groupId>com.alibaba.csp</groupId>
-                <artifactId>sentinel-datasource-extension</artifactId>
-                <version>${project.version}</version>
-            </dependency>
-
-            <!-- for test -->
-            <dependency>
-                <groupId>junit</groupId>
-                <artifactId>junit</artifactId>
-                <scope>test</scope>
-            </dependency>
-        </dependencies>
-    </dependencyManagement>
 </project>