bitbake: toaster/tests/functional/utils: Drop unused code from wait_until_build_cancelled

The code modifying the build object requires direct database access
which is potentially problematic. It was being run on a database which
was being reset after changes anyway so the code effectively did nothing.
Remove it as it is unneeded.

(Bitbake rev: 2e3fa624eb3972aef91d877337479eeb0f3dd365)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/tests/functional/utils.py

@@ -48,7 +48,6 @@ def wait_until_build_cancelled(test_instance):
     """
     timeout = 30
     start_time = 0
-    build = None
     while True:
         try:
             if start_time > timeout:
@@ -64,11 +63,7 @@ def wait_until_build_cancelled(test_instance):
             if 'failed' in str(build_state).lower():
                 break
             if 'cancelling' in str(build_state).lower():
-                # Change build state to cancelled
-                if not build:  # get build object only once
-                    build = Build.objects.last()
-                    build.outcome = Build.CANCELLED
-                    build.save()
+                pass
             if 'cancelled' in str(build_state).lower():
                 break
         except NoSuchElementException: