Revert "xpdrops: fix recoloring xpdrops with hide skill icons on"

This reverts commit abbff79294.

runelite-client/src/main/java/net/runelite/client/plugins/experiencedrop/XpDropPlugin.java

@@ -28,7 +28,6 @@ import com.google.inject.Provides;
 import java.util.Arrays;
 import java.util.EnumMap;
 import java.util.Map;
-import java.util.Objects;
 import java.util.stream.IntStream;
 import javax.inject.Inject;
 import net.runelite.api.Client;
@@ -113,7 +112,6 @@ public class XpDropPlugin extends Plugin
 		final IntStream spriteIDs =
 			Arrays.stream(children)
 				.skip(1) // skip text
-				.filter(Objects::nonNull)
 				.mapToInt(Widget::getSpriteId);
 
 		int color = 0;