Remove use of deprecated terse() on print_var

terse is now the default.

Change-Id: If25901eea7fdfa502b012cb995242790e7f6176d
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/lib/var_stack.py b/lib/var_stack.py
index f09845c..2b2aa97 100644
--- a/lib/var_stack.py
+++ b/lib/var_stack.py
@@ -92,8 +92,7 @@
 
         buffer += self.__obj_name + ":\n"
         indent = 2
-        buffer += gp.sprint_varx('stack_dict', self.__stack_dict, gp.terse(),
-                                 indent)
+        buffer += gp.sprint_varx('stack_dict', self.__stack_dict, indent)
 
         return buffer