Disable all jobs for testing

Change-Id: Ib87a9ffe99a6a39265521d6c1a6cc4cf68181274
diff --git a/mbed-tls-nightly-tests.yaml b/mbed-tls-nightly-tests.yaml
index 2d44769..cff215a 100644
--- a/mbed-tls-nightly-tests.yaml
+++ b/mbed-tls-nightly-tests.yaml
@@ -1,7 +1,7 @@
 - job:
     concurrent: true
     description: Mbed TLS Nightly Tests
-    disabled: false
+    disabled: true
     name: mbed-tls-nightly-tests
     parameters:
     - string: