This might be important

pom.xml

@@ -90,8 +90,8 @@
                             <shadedPattern>com.gmail.nossr50.commons.logging</shadedPattern>
                         </relocation>
                         <relocation>
-                            <pattern>net.snaq</pattern>
-                            <shadedPattern>com.gmail.nossr50.dbpool</shadedPattern>
+                            <pattern>org.apache.tomcat.jdbc</pattern>
+                            <shadedPattern>com.gmail.nossr50.org.apache.tomcat.jdbc</shadedPattern>
                         </relocation>
                     </relocations>
                 </configuration>

src/main/java/com/gmail/nossr50/database/SQLDatabaseManager.java

@@ -11,11 +11,9 @@ import java.util.EnumMap;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Properties;
 import java.util.UUID;
 import java.util.concurrent.locks.ReentrantLock;
 
-import org.apache.tomcat.jdbc.pool.ConnectionPool;
 import org.apache.tomcat.jdbc.pool.DataSource;
 import org.apache.tomcat.jdbc.pool.PoolProperties;
 import org.bukkit.scheduler.BukkitRunnable;