Revert "Admin Log Browser Improvements (#39130)"

This reverts commit f67cebf7a4.

Per request of @Kowlin and @southbridge-fur

Check out https://github.com/space-wizards/space-station-14/issues/39960 for further information

Content.Client/Administration/UI/CustomControls/AdminLogLabel.cs

@@ -0,0 +1,33 @@
+using Content.Shared.Administration.Logs;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+
+namespace Content.Client.Administration.UI.CustomControls;
+
+public sealed class AdminLogLabel : RichTextLabel
+{
+    public AdminLogLabel(ref SharedAdminLog log, HSeparator separator)
+    {
+        Log = log;
+        Separator = separator;
+
+        SetMessage($"{log.Date:HH:mm:ss}: {log.Message}");
+        OnVisibilityChanged += VisibilityChanged;
+    }
+
+    public SharedAdminLog Log { get; }
+
+    public HSeparator Separator { get; }
+
+    private void VisibilityChanged(Control control)
+    {
+        Separator.Visible = Visible;
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        base.Dispose(disposing);
+
+        OnVisibilityChanged -= VisibilityChanged;
+    }
+}