Revert "print args in runSaltProcessStep"

This reverts commit 3281ba12eed3f7a10bc33a0f7cc12e56ef8f164e.

Change-Id: I497ff51b7a716e11e8602bed53602dd3b2f94824
diff --git a/src/com/mirantis/mk/Salt.groovy b/src/com/mirantis/mk/Salt.groovy
index 297acb6..4ceee99 100644
--- a/src/com/mirantis/mk/Salt.groovy
+++ b/src/com/mirantis/mk/Salt.groovy
@@ -156,8 +156,7 @@
     def common = new com.mirantis.mk.Common()
     def out
 
-    arg_string = arg.join(',')
-    common.infoMsg("Running step ${fun} on ${tgt} with args ${arg_string}")
+    common.infoMsg("Running step ${fun} on ${tgt}")
 
     if (batch == true) {
         out = runSaltCommand(master, 'local_batch', ['expression': tgt, 'type': 'compound'], fun, String.valueOf(batch), arg)