[ASTERIXDB-2769][OTH] Remove explicit printing of node group

- user model changes: no
- storage format changes: no
- interface changes: no

Details:

- Remove explicit printing of node group from FormatPrintVisitor
  since it will be printed as part of the dataset WITH record.

Change-Id: Id832c3216081a01d2dccbb1184b0a8eaa819b5b2
Reviewed-on: https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/7683
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Murtadha Hubail <mhubail@apache.org>
Reviewed-by: Dmitry Lychagin <dmitry.lychagin@couchbase.com>
diff --git a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/FormatPrintVisitor.java b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/FormatPrintVisitor.java
index 7c5e8be..3a329cc 100644
--- a/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/FormatPrintVisitor.java
+++ b/asterixdb/asterix-lang-common/src/main/java/org/apache/asterix/lang/common/visitor/FormatPrintVisitor.java
@@ -455,10 +455,6 @@
             out.print(" using " + revertStringToQuoted(externalDetails.getAdapter()));
             printConfiguration(externalDetails.getProperties());
         }
-        String nodeGroupName = dd.getNodegroupName();
-        if (nodeGroupName != null) {
-            out.print(" on " + nodeGroupName);
-        }
         Map<String, String> hints = dd.getHints();
         if (dd.getHints().size() > 0) {
             out.print(" hints ");