Remove cloud service providers from CCA trustee index

Removed cloud service providers from the index.

Author: pareenaverma

content/learning-paths/servers-and-cloud-computing/cca-trustee/_index.md

@@ -21,11 +21,6 @@ author:
 ### Tags
 skilllevels: Advanced
 subjects: Performance and Architecture
-cloud_service_providers:
-  - AWS
-  - Microsoft Azure
-  - Google Cloud
-  - Oracle
 armips:
   - Neoverse
   - Cortex-A