fix: remove splunk-appinspect from appinspect tags (#375)

### Description

(PR description goes here)

### Checklist

- [ ] `README.md` has been updated or is not required
- [ ] push trigger tests
- [ ] manual release test
- [ ] automated releases test
- [ ] pull request trigger tests
- [ ] schedule trigger tests
- [ ] workflow errors/warnings reviewed and addressed

### Testing done 
(for each selected checkbox, the corresponding test results link should
be listed here)

.github/workflows/reusable-build-test-release.yml

@@ -839,7 +839,6 @@ jobs:
           - "developer_guidance"
           - "future"
           - "self-service"
-          - "splunk_appinspect"
           - "manual"
     steps:
       - uses: actions/checkout@v4