[8.x] [Profiling UI] Remove redundant page separator (elastic#206004) (…

…elastic#206136)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[Profiling UI] Remove redundant page separator
(elastic#206004)](elastic#206004)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Milosz
Marcinkowski","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-01-09T11:37:39Z","message":"[Profiling
UI] Remove redundant page separator (elastic#206004)\n\nCloses
elastic#206002\r\n\r\n## Summary\r\n\r\nThis PR removes redundant page
separator to save up some space.\r\n\r\nBefore:\r\n\r\n<img
width=\"1727\" alt=\"Screenshot 2025-01-08 at 16 16
50\"\r\nsrc=\"https://github.com/user-attachments/assets/9f69ebb2-d1a7-430e-9d9e-376712909ac1\"\r\n/>\r\n\r\nAfter:
\r\n\r\n<img width=\"1728\" alt=\"Screenshot 2025-01-08 at 16 19
34\"\r\nsrc=\"https://github.com/user-attachments/assets/9d738aa0-adba-46f3-ba79-5f20b7b90499\"\r\n/>","sha":"96ea0102b6c6134dc69f5eab03c743fbf5db3159","branchLabelMapping":{"^v9.0.0$":"main","^v8.18.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","v9.0.0","backport:prev-minor"],"title":"[Profiling
UI] Remove redundant page
separator","number":206004,"url":"https://github.com/elastic/kibana/pull/206004","mergeCommit":{"message":"[Profiling
UI] Remove redundant page separator (elastic#206004)\n\nCloses
elastic#206002\r\n\r\n## Summary\r\n\r\nThis PR removes redundant page
separator to save up some space.\r\n\r\nBefore:\r\n\r\n<img
width=\"1727\" alt=\"Screenshot 2025-01-08 at 16 16
50\"\r\nsrc=\"https://github.com/user-attachments/assets/9f69ebb2-d1a7-430e-9d9e-376712909ac1\"\r\n/>\r\n\r\nAfter:
\r\n\r\n<img width=\"1728\" alt=\"Screenshot 2025-01-08 at 16 19
34\"\r\nsrc=\"https://github.com/user-attachments/assets/9d738aa0-adba-46f3-ba79-5f20b7b90499\"\r\n/>","sha":"96ea0102b6c6134dc69f5eab03c743fbf5db3159"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.0.0","branchLabelMappingKey":"^v9.0.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/206004","number":206004,"mergeCommit":{"message":"[Profiling
UI] Remove redundant page separator (elastic#206004)\n\nCloses
elastic#206002\r\n\r\n## Summary\r\n\r\nThis PR removes redundant page
separator to save up some space.\r\n\r\nBefore:\r\n\r\n<img
width=\"1727\" alt=\"Screenshot 2025-01-08 at 16 16
50\"\r\nsrc=\"https://github.com/user-attachments/assets/9f69ebb2-d1a7-430e-9d9e-376712909ac1\"\r\n/>\r\n\r\nAfter:
\r\n\r\n<img width=\"1728\" alt=\"Screenshot 2025-01-08 at 16 19
34\"\r\nsrc=\"https://github.com/user-attachments/assets/9d738aa0-adba-46f3-ba79-5f20b7b90499\"\r\n/>","sha":"96ea0102b6c6134dc69f5eab03c743fbf5db3159"}}]}]
BACKPORT-->

Co-authored-by: Milosz Marcinkowski <[email protected]>

x-pack/solutions/observability/plugins/profiling/public/components/profiling_app_page_template/index.tsx

@@ -12,7 +12,6 @@ import {
   EuiCallOut,
   EuiFlexGroup,
   EuiFlexItem,
-  EuiHorizontalRule,
   EuiPanel,
 } from '@elastic/eui';
 import { i18n } from '@kbn/i18n';
@@ -116,7 +115,6 @@ export function ProfilingAppPageTemplate({
           <EuiFlexItem grow={false}>
             <EuiPanel hasShadow={false} color="subdued">
               <PrimaryProfilingSearchBar />
-              <EuiHorizontalRule />
             </EuiPanel>
           </EuiFlexItem>
         )}