Clean up the server's logger.

src/main/java/emu/grasscutter/Grasscutter.java

@@ -69,6 +69,10 @@ public final class Grasscutter {
         // Declare logback configuration.
         System.setProperty("logback.configurationFile", "src/main/resources/logback.xml");
 
+        // Disable the MongoDB logger.
+        var mongoLogger = (Logger) LoggerFactory.getLogger("org.mongodb.driver");
+        mongoLogger.setLevel(Level.OFF);
+
         // Load server configuration.
         Grasscutter.loadConfig();
         // Attempt to update configuration.
@@ -101,6 +105,7 @@ public final class Grasscutter {
                     exitEarly = true;
                 }
                 case "-debug" -> {
+                    // Set the logger to debug.
                     log.setLevel(Level.DEBUG);
                     log.debug("The logger is now running in debug mode.");
                 }

src/main/resources/logback.xml

@@ -6,6 +6,7 @@
       <pattern>%d{HH:mm:ss} &lt;%highlight(%level):%gray(%class{0})&gt; %msg%n</pattern>
     </encoder>
   </appender>
+
   <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
     <file>logs/latest.log</file>
     <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
@@ -16,13 +17,18 @@
       <pattern>%d{yyyy-MM-dd'T'HH:mm:ss'Z'} &lt;%level:%class&gt; %m%n</pattern>
     </encoder>
   </appender>
+
   <appender name="SERVEREVENT" class="emu.grasscutter.utils.ServerLogEventAppender">
     <encoder>
       <pattern>%d{HH:mm:ss} &lt;%highlight(%level):%gray(%class{0})&gt; %msg%n</pattern>
     </encoder>
   </appender>
 
+  <logger name="express" level="OFF" />
+  <logger name="org.quartz" level="OFF" />
   <logger name="org.reflections" level="OFF" />
+  <logger name="org.eclipse.jetty" level="OFF" />
+
   <logger name="emu.grasscutter" level="${LOG_LEVEL}" />
 
   <root level="INFO">