remove *.default from [EXECUTE] in *.default files

The problem is that the .cfg file cannot override the [EXECUTE]
provided list of tests

Change-Id: I7e1e0499b3b32014b25ae4b515263f57a4ea6daf
diff --git a/msc/MSC_Tests.cfg b/msc/MSC_Tests.cfg
index 6fb3523..a1f1332 100644
--- a/msc/MSC_Tests.cfg
+++ b/msc/MSC_Tests.cfg
@@ -15,6 +15,7 @@
 [MAIN_CONTROLLER]
 
 [EXECUTE]
+MSC_Tests.control
 #MSC_Tests.TC_reset
 #MSC_Tests.TC_cmserv_imsi_unknown
 #MSC_Tests.TC_lu_imsi_noauth_tmsi