remove dubbo-all javadoc plugin (#2456)

Author: jerrick-zhu

all/pom.xml

@@ -546,35 +546,6 @@
                     </execution>
                 </executions>
             </plugin>
-            <plugin>
-                <artifactId>maven-javadoc-plugin</artifactId>
-                <version>${maven_javadoc_version}</version>
-                <executions>
-                    <execution>
-                        <id>attach-javadoc</id>
-                        <goals>
-                            <goal>jar</goal>
-                        </goals>
-                        <configuration>
-                            <doclint>none</doclint>
-                        </configuration>
-                    </execution>
-                </executions>
-                <configuration>
-                    <includeDependencySources>true</includeDependencySources>
-                    <dependencySourceIncludes>
-                        <dependencySourceInclude>com.alibaba:dubbo-*</dependencySourceInclude>
-                        <dependencySourceExclude>com.alibaba:hessian-*</dependencySourceExclude>
-                    </dependencySourceIncludes>
-                    <show>public</show>
-                    <charset>UTF-8</charset>
-                    <encoding>UTF-8</encoding>
-                    <docencoding>UTF-8</docencoding>
-                    <links>
-                        <link>http://docs.oracle.com/javase/7/docs/api</link>
-                    </links>
-                </configuration>
-            </plugin>
         </plugins>
     </build>
 </project>