build-jobs: Remove dump_install_command from buildsdk job

When the dump_install_command script is executed in the SDK build step
an error occurs because the fng-install script/vars are not available.

build-yocto.yml

@@ -102,6 +102,8 @@
   rules:
     - when: manual
       allow_failure: true
+  script:
+    - *build_script
   variables:
     BITBAKE_TASK: "populate_sdk"