Revert "Suppress auto-trigger for PR jobs"

This reverts commit 30b83ab2412ce03fe5c5ffd57c801227abb7f0d6.

Change-Id: I584473bc8ff96e4dcddcdd2e5a681dd8a2af4c97
diff --git a/mbed-tls-pr-head.yaml b/mbed-tls-pr-head.yaml
index 168cb51..630790e 100644
--- a/mbed-tls-pr-head.yaml
+++ b/mbed-tls-pr-head.yaml
@@ -45,7 +45,6 @@
         property-strategies:
           all-branches:
           - pipeline-branch-durability-override: performance-optimized
-          - suppress-scm-triggering: true
         submodule:
           disable: false
           recursive: true
diff --git a/mbed-tls-pr-merge.yaml b/mbed-tls-pr-merge.yaml
index 99032cd..a9fd447 100644
--- a/mbed-tls-pr-merge.yaml
+++ b/mbed-tls-pr-merge.yaml
@@ -45,7 +45,6 @@
         property-strategies:
           all-branches:
           - pipeline-branch-durability-override: performance-optimized
-          - suppress-scm-triggering: true
         submodule:
           disable: false
           recursive: true