Remove overriding style on the height of option list (#1269)

* remove unused files

Signed-off-by: Eric Wei <menwe@amazon.com>

* missing snapshots

Signed-off-by: Eric Wei <menwe@amazon.com>

* remove unused files

Signed-off-by: Eric Wei <menwe@amazon.com>

* remove overriding styling code for eui combo box

Signed-off-by: Eric <menwe@amazon.com>

* update snapshots

Signed-off-by: Eric <menwe@amazon.com>

---------

Signed-off-by: Eric Wei <menwe@amazon.com>
Signed-off-by: Eric <menwe@amazon.com>
(cherry picked from commit 3a41fdc)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

public/components/event_analytics/explorer/visualizations/config_panel/config_panel.scss

@@ -119,14 +119,6 @@ $vis-editor-sidebar-min-width: 350px;
   }
 }
 
-.euiComboBoxOptionsList__rowWrap {
-  max-height: 250px;
-}
-
-.euiComboBoxOptionsList__rowWrap>div {
-  height: 250px !important;
-}
-
 .cp__rightContainer {
   display: grid;