jobs/ttcn3: fixup for blocker remove in testsuites

Delete the part that was using the "blocking" variable too.

Fixes: 30ccbd3 ("jobs/ttcn3: don't block on same testsuite running")
Change-Id: I23bc6eb99d70447263b79bc4e33524a6932b43eb

jobs/ttcn3-testsuites-kernel-git.yml

@@ -114,10 +114,6 @@
           fingerprint: false
           only-if-success: false
     properties:
-    - build-blocker:
-        use-build-blocker: true
-        blocking-jobs:
-          - "{obj:blocking}"
     - build-discarder:
         days-to-keep: 30
         num-to-keep: 120

jobs/ttcn3-testsuites.yml

@@ -383,10 +383,6 @@
           fingerprint: false
           only-if-success: false
     properties:
-    - build-blocker:
-        use-build-blocker: true
-        blocking-jobs:
-          - "{obj:blocking}"
     - build-discarder:
         days-to-keep: 30
         num-to-keep: 120