text: Remove surface arg in create_text_model

Remove the wl_surface argument from create_text_model request. The
wl_surface is specified as an argument in the activate request instead.

Signed-off-by: Jan Arne Petersen <jpetersen@openismus.com>
diff --git a/tests/text-test.c b/tests/text-test.c
index bd2a5c5..9b0f88c 100644
--- a/tests/text-test.c
+++ b/tests/text-test.c
@@ -1,5 +1,5 @@
 /*
- * Copyright © 2012 Openismus GmbH
+ * Copyright © 2012 Intel Corporation
  *
  * Permission to use, copy, modify, distribute, and sell this software and
  * its documentation for any purpose is hereby granted without fee, provided