Eliminate reference to sprint_robot_error_report.

lib/gen_robot_valid.py
  - I changed 2 calls to sprint_robot_error_report to sprint_error_report since
    sprint_robot_error_report is no longer defined.

Change-Id: Ieea4c11c6e5f8bf17ef2859419302a13d01c292e
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/lib/gen_robot_valid.py b/lib/gen_robot_valid.py
index 8a58d8c..8292bb5 100755
--- a/lib/gen_robot_valid.py
+++ b/lib/gen_robot_valid.py
@@ -81,7 +81,7 @@
         error_message = gv.svalid_value(var_value, invalid_values,
                                         valid_values, var_name)
     if not error_message == "":
-        error_message = grp.sprint_robot_error_report(error_message)
+        error_message = grp.sprint_error_report(error_message)
         BuiltIn().fail(error_message)
 
 ###############################################################################
@@ -133,7 +133,7 @@
     else:
         error_message = gv.svalid_integer(var_value, var_name)
     if not error_message == "":
-        error_message = grp.sprint_robot_error_report(error_message)
+        error_message = grp.sprint_error_report(error_message)
         BuiltIn().fail(error_message)
 
 ###############################################################################