Remove gradient from combatNotification.

Author: vLuckyyy

eternalcombat-plugin/src/main/java/com/eternalcode/combat/config/implementation/PluginConfig.java

@@ -252,7 +252,7 @@ public static class Messages extends OkaeriConfig {
             "# BossBar overlays: https://javadoc.io/static/net.kyori/adventure-api/4.14.0/net/kyori/adventure/bossbar/BossBar.Overlay.html"
         })
         public Notice combatNotification = BukkitNotice.builder()
-            .actionBar("<gradient:#5e4fa2:#f79459>Combat ends in: <white>{TIME}</white></gradient>")
+            .actionBar("Combat ends in: <white>{TIME}</white></gradient>")
             .sound(Sound.ENTITY_EXPERIENCE_ORB_PICKUP, SoundCategory.PLAYERS, 2.0F, 1.0F)
             .build();