[Multiple Datasource] Remove arrow down icon from data source selectable component

CHANGELOG.md

@@ -59,6 +59,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [Dynamic Configurations] Pass request headers when making application config calls ([#6164](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6164))
 - [Discover] Options button to configure legacy mode and remove the top navigation option ([#6170](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6170))
 - [Multiple Datasource] Add default functionality for customer to choose default datasource ([#6058](https://github.com/opensearch-project/OpenSearch-Dashboards/issues/6058))
+- [Multiple Datasource] Remove arrow down icon from data source selectable component ([#6257](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6257))
 - [Multiple Datasource] Add import support for Vega when specifying a datasource ([#6123](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6123))
 - [Workspace] Validate if workspace exists when setup inside a workspace ([#6154](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6154))
 - [Workspace] Register a workspace dropdown menu at the top of left nav bar ([#6150](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/6150))

src/plugins/data_source_management/public/components/data_source_menu/data_source_selectable.tsx

@@ -126,16 +126,15 @@ export class DataSourceSelectable extends React.Component<
   render() {
     const button = (
       <>
-        <EuiIcon type="database" />
         <EuiButtonEmpty
           className="euiHeaderLink"
           onClick={this.onClick.bind(this)}
           data-test-subj="dataSourceSelectableContextMenuHeaderLink"
           aria-label={i18n.translate('dataSourceSelectable.dataSourceOptionsButtonAriaLabel', {
             defaultMessage: 'dataSourceMenuButton',
           })}
-          iconType="arrowDown"
-          iconSide="right"
+          iconType="database"
+          iconSide="left"
           size="s"
           disabled={this.props.disabled || false}
         >