Remove topology image from Temporal Cloud overview page (#4113)

The system topology image has been removed from the /cloud/overview page as it's no longer needed for this section.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Haiku 4.5 <noreply@anthropic.com>
Co-authored-by: Brian MacDonald <brian.macdonald@temporal.io>

Author: 3 people

docs/evaluate/temporal-cloud/overview.mdx

@@ -16,8 +16,6 @@ tags:
   - Temporal Cloud
 ---
 
-import { CaptionedImage } from '@site/src/components';
-
 Temporal Cloud is a fully managed durable execution platform.
 It handles the complexity of running Temporal at scale—persistence, replication, upgrades, and availability—so you can focus on building applications.
 
@@ -27,11 +25,6 @@ The platform stores encrypted Workflow state and orchestrates execution, while y
 
 ## How Temporal Cloud works
 
-<CaptionedImage
-    src="/img/cloud/cloud-overview.png"
-    title="High-level system topology"
-/>
-
 Temporal Cloud operates as the control plane for your distributed applications:
 
 1. **Your environment**: You run Workers that execute your Workflow and Activity code. These can be deployed anywhere—Kubernetes, VMs, serverless, on-premises.