vishal: disable CI job

Signed-off-by: Vishal Bhoj <vishal.bhoj@linaro.org>
Change-Id: I0868a4803e758d90100602ac76f764fa1957a57e
diff --git a/vishal-mbed-tls-nightly-tests.yaml b/vishal-mbed-tls-nightly-tests.yaml
index 001a7c7..8d9581a 100644
--- a/vishal-mbed-tls-nightly-tests.yaml
+++ b/vishal-mbed-tls-nightly-tests.yaml
@@ -1,7 +1,7 @@
 - job:
     concurrent: true
     description: Mbed TLS Nightly Tests
-    disabled: false
+    disabled: true
     name: vishal-mbed-tls-nightly-tests
     parameters:
     - string: