use master branch of binary artifacts

Change-Id: I25a7c780df5d6ddec5984be0e753d68c0bb79b63
Reviewed-by: David Schulz <david.schulz@digia.com>

qtcreator.pri

@@ -2,7 +2,7 @@
 QTCREATOR_PRI_INCLUDED = 1
 
 QTCREATOR_VERSION = 2.8.81
-BINARY_ARTIFACTS_BRANCH = 3.0
+BINARY_ARTIFACTS_BRANCH = master
 
 isEqual(QT_MAJOR_VERSION, 5) {