Revert "BUG-1097: implemented check for null or empty list in builder classes."

This reverts commit 883ae26ee98953a5df7cc0956afa807a82d58a3a
which was breakage in Binding Specification and should not
be merged without community-wide discussion.

Change-Id: Ifda1124d974b1ce299551be80a84c45b85b4155a
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>
Merge "Revert "BUG-1097: implemented check for null or empty list in builder classes.""