Remove a case where a pointer appeared in text tests (#1251)

This printed a table. This will make Lua print the address of the table and
hence the output of this test was non-deterministic.

Signed-off-by: Uli Schlachter <psychon@znc.in>

tests/examples/text/gears/object/properties.lua

@@ -42,7 +42,8 @@ o:method(1, 2, 3)
  -- Random properties can also be added, the signal will be emitted automatically.
 
 o:connect_signal("property::something", function(obj, value)
-    print("In the connection handler!", obj, value)
+    assert(obj == o)
+    print("In the connection handler!", value)
 end)
 
 print(o.something)