use python3 instead of specific version

Vladimir Kotal · Vladimir Kotal · commit 503975c00a83 · 2018-01-17T16:03:46.000+01:00
diff --git a/tools/sync/mirror.py b/tools/sync/mirror.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.4
+#!/usr/bin/env python3
 #
 # CDDL HEADER START
 #
diff --git a/tools/sync/sync.py b/tools/sync/sync.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3.4
+#!/usr/bin/env python3
 #
 # CDDL HEADER START
 #
