Do not send server custom chart for Metrics (#1610)

The server chart is automatically populated by the bStats backend.

connector/src/main/java/org/geysermc/connector/GeyserConnector.java

@@ -200,7 +200,6 @@ public class GeyserConnector {
 
         if (config.getMetrics().isEnabled()) {
             metrics = new Metrics(this, "GeyserMC", config.getMetrics().getUniqueId(), false, java.util.logging.Logger.getLogger(""));
-            metrics.addCustomChart(new Metrics.SingleLineChart("servers", () -> 1));
             metrics.addCustomChart(new Metrics.SingleLineChart("players", players::size));
             // Prevent unwanted words best we can
             metrics.addCustomChart(new Metrics.SimplePie("authMode", () -> AuthType.getByName(config.getRemote().getAuthType()).toString().toLowerCase()));