Disable PR Head/Merge

Move PR Head/Merge jobs back to the staging to
share the loading of the production

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: I56fa2e8b58643835b33cb58c339a93d406ee99ae
diff --git a/mbed-tls-pr-head.yaml b/mbed-tls-pr-head.yaml
index 9d37b02..fa822ac 100644
--- a/mbed-tls-pr-head.yaml
+++ b/mbed-tls-pr-head.yaml
@@ -2,7 +2,7 @@
     name: mbed-tls-pr-head
     description: 'Job for testing mbed tls PR heads'
     project-type: multibranch
-    disabled: false
+    disabled: true
     prune-dead-branches: true
     days-to-keep: 60
     num-to-keep: 1000
diff --git a/mbed-tls-pr-merge.yaml b/mbed-tls-pr-merge.yaml
index 3c4acf2..beeccf4 100644
--- a/mbed-tls-pr-merge.yaml
+++ b/mbed-tls-pr-merge.yaml
@@ -2,6 +2,7 @@
     name: mbed-tls-pr-merge
     description: 'Job for testing PRs merged with the target branch head'
     project-type: multibranch
+    disabled: true
     prune-dead-branches: true
     days-to-keep: 60
     num-to-keep: 1000