.oniro-ci: remove redundant script from .build-rauc-bundle

The job extends the .build-image job so this part is automatic.

Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@huawei.com>

.oniro-ci/build-generic.yaml

@@ -313,8 +313,6 @@
   extends: .build-image
   variables:
     CI_ONIRO_JOB_ARTIFACTS: "*.raucb"
-  script:
-    - !reference [.build-image, script]
 
 # This job is currently used to customize the behavior in oniro and xts-acts.
 # It will be removed when that is safe to do so. It is not documented.