Remove unneeded @SuppressWarnings("resource")

Change-Id: Ief5d5536fb34e55dfb14e3977f59b23823b2d132
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/SshSession.java

@@ -36,7 +36,6 @@ public class SshSession {
     this.account = account;
   }
 
-  @SuppressWarnings("resource")
   public String exec(String command) throws JSchException, IOException {
     ChannelExec channel = (ChannelExec) getSession().openChannel("exec");
     try {

gerrit-pgm/src/main/java/com/google/gerrit/pgm/init/InitPluginStepsLoader.java

@@ -64,11 +64,9 @@ public class InitPluginStepsLoader {
 
   private InitStep loadInitStep(File jar) {
     try {
-      @SuppressWarnings("resource")
       ClassLoader pluginLoader =
           new URLClassLoader(new URL[] {jar.toURI().toURL()},
               InitPluginStepsLoader.class.getClassLoader());
-      @SuppressWarnings("resource")
       JarFile jarFile = new JarFile(jar);
       Attributes jarFileAttributes = jarFile.getManifest().getMainAttributes();
       String initClassName = jarFileAttributes.getValue("Gerrit-InitStep");

gerrit-pgm/src/main/java/com/google/gerrit/pgm/util/IoUtil.java

@@ -57,7 +57,6 @@ public final class IoUtil {
     if (!(cl instanceof URLClassLoader)) {
       throw noAddURL("Not loaded by URLClassLoader", null);
     }
-    @SuppressWarnings("resource")
     URLClassLoader urlClassLoader = (URLClassLoader) cl;
 
     Method addURL;