Merge pull request #3095 from wing328/fix_okhttp_pom

[Java][okhttp-gson] fix okhttp pom to remove dependency on gradle, sbt test

Author: wing328

modules/swagger-codegen/src/main/resources/Java/libraries/okhttp-gson/pom.mustache

@@ -105,53 +105,6 @@
           <target>1.7</target>
         </configuration>
       </plugin>
-      <!-- For testing build.gradle, build.sbt, mvn javadoc:javadoc -->
-      <plugin>
-        <groupId>org.codehaus.mojo</groupId>
-        <artifactId>exec-maven-plugin</artifactId>
-        <version>1.2.1</version>
-        <executions>
-          <execution>
-            <id>gradle-test</id>
-            <phase>integration-test</phase>
-            <goals>
-              <goal>exec</goal>
-            </goals>
-            <configuration>
-              <executable>gradle</executable>
-              <arguments>
-                <argument>check</argument>
-              </arguments>
-            </configuration>
-          </execution>
-          <execution>
-            <id>sbt-test</id>
-            <phase>integration-test</phase>
-            <goals>
-              <goal>exec</goal>
-            </goals>
-            <configuration>
-              <executable>sbt</executable>
-              <arguments>
-                <argument>publishLocal</argument>
-              </arguments>
-            </configuration>
-          </execution>
-          <execution>
-            <id>mvn-javadoc-test</id>
-            <phase>integration-test</phase>
-            <goals>
-              <goal>exec</goal>
-            </goals>
-            <configuration>
-              <executable>mvn</executable>
-              <arguments>
-                <argument>javadoc:javadoc</argument>
-              </arguments>
-            </configuration>
-          </execution>
-        </executions>
-      </plugin>
     </plugins>
   </build>
   <dependencies>