Remove the use of the deprecated packages attribute

Author: SquidXTV

application/src/main/resources/log4j2.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<Configuration status="WARN" monitorInterval="30" packages="org.togetherjava.tjbot.logging">
+<Configuration status="WARN" monitorInterval="30">
     <Appenders>
         <Console name="Console" target="SYSTEM_OUT">
             <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>