Added checks for redundant and unused imports.

Author: andrewlalis

checkstyle/checkstyle.xml

@@ -94,5 +94,9 @@ See https://checkstyle.org/ for more information.
         <module name="GenericWhitespace"/>
         <module name="MethodParamPad"/>
         <module name="TypecastParenPad"/>
+        <module name="RedundantImport"/>
+        <module name="UnusedImports">
+            <property name="processJavadoc" value="false"/>
+        </module>
     </module>
 </module>

src/main/java/net/javadiscord/javabot2/Bot.java

@@ -3,21 +3,17 @@
 import com.mongodb.MongoClient;
 import com.mongodb.MongoClientURI;
 import com.mongodb.client.MongoDatabase;
-import com.mongodb.client.model.IndexModel;
 import com.mongodb.client.model.IndexOptions;
 import com.mongodb.client.model.Indexes;
 import com.zaxxer.hikari.HikariConfig;
 import com.zaxxer.hikari.HikariDataSource;
 import net.javadiscord.javabot2.command.SlashCommandListener;
 import net.javadiscord.javabot2.config.BotConfig;
-import org.bson.BsonString;
-import org.bson.Document;
 import org.javacord.api.DiscordApi;
 import org.javacord.api.DiscordApiBuilder;
 import org.javacord.api.entity.intent.Intent;
 
 import java.nio.file.Path;
-import java.util.List;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;