removed redundant launcher object.

Author: Nikhil Bhoski

src/main/java/com/mathworks/ci/RunMatlabCommandBuilder.java

@@ -125,10 +125,10 @@ private synchronized int execMatlabCommand(FilePath workspace, Launcher launcher
         try {
             matlabLauncher = getProcessToRunMatlabCommand(workspace, launcher, listener, envVars,
                     "cd('"+ uniqeTmpFolderPath.getRemote() +"');"+ uniqueCommandFile, uniqueTmpFldrName);
-            launcher.launch().pwd(uniqeTmpFolderPath).envs(envVars);
+            
             listener.getLogger()
                     .println("#################### Starting command output ####################");
-            return matlabLauncher.join();
+            return matlabLauncher.pwd(workspace).join();
 
         } catch (Exception e) {
             listener.getLogger().println(e.getMessage());