fix: remove unused import

Author: VlaM5

application/src/main/java/org/togetherjava/tjbot/features/mediaonly/MediaOnlyChannelListener.java

@@ -4,7 +4,6 @@
 import net.dv8tion.jda.api.entities.Message;
 import net.dv8tion.jda.api.entities.MessageEmbed;
 import net.dv8tion.jda.api.entities.MessageType;
-import net.dv8tion.jda.api.entities.messages.MessageSnapshot;
 import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
 import net.dv8tion.jda.api.requests.RestAction;
 import net.dv8tion.jda.api.utils.messages.MessageCreateBuilder;