Revert "Disable all jobs for testing"

This reverts commit c7887978a35db2b5c0113269268cfc71775aeef2.
diff --git a/mbed-tls-nightly-tests.yaml b/mbed-tls-nightly-tests.yaml
index b960d31..f88db92 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: true
+    disabled: false
     name: mbed-tls-nightly-tests
     parameters:
     - string: