docs(ci-insights): remove health status section only

The health status information is now documented within the app itself, so we're removing it from the documentation to avoid duplication. However, flaky detection remains as it's not documented in the app.

## Changes:
- Removed the Health Status section that explained the three statuses (Healthy, Broken, Flaky)
- Kept the Flaky Detection section as this is not documented in the app
- Updated the Jobs description to remove mention of health status tracking

Author: cursoragent

src/content/docs/ci-insights.mdx

@@ -37,8 +37,7 @@ CI Insights provides monitoring and analysis for two key components of your CI p
 #### Jobs
 
 Jobs are the individual tasks that run as part of your CI pipeline (e.g.,
-build, test, deploy steps). CI Insights tracks job-level metrics and health
-status.
+build, test, deploy steps). CI Insights tracks job-level metrics.
 
 <Image src={JobsScreenshot} alt="CI Insights Jobs" />
 
@@ -50,16 +49,6 @@ cases.
 
 <Image src={TestsScreenshot} alt="CI Insights Tests" />
 
-### Health Status
-
-For each job and test, CI Insights computes a health status based on the last 10 runs:
-
-- **Healthy**: The job or test works fine and produces consistent results
-- **Broken**: The job or test consistently fails and needs attention
-- **Flaky**: The job or test is unstable and its outcome is not reliable
-
-This health status helps you quickly identify which components of your CI pipeline need attention.
-
 ### Flaky Detection
 
 CI Insights automatically detects flaky behavior in both jobs and tests using the same criteria: