Remove unnecessary event spi (#9)

src/main/java/io/kokuwa/keycloak/metrics/MicrometerEventListenerSpi.java

@@ -1,32 +0,0 @@
-package io.kokuwa.keycloak.metrics;
-
-import org.keycloak.events.EventListenerSpi;
-import org.keycloak.provider.Provider;
-
-/**
- * Factory for {@link MicrometerEventListener}.
- *
- * @author Stephan Schnabel
- */
-public class MicrometerEventListenerSpi extends EventListenerSpi {
-
-	@Override
-	public boolean isInternal() {
-		return false;
-	}
-
-	@Override
-	public String getName() {
-		return "Micrometer Metrics Provider";
-	}
-
-	@Override
-	public Class<? extends Provider> getProviderClass() {
-		return MicrometerEventListener.class;
-	}
-
-	@Override
-	public Class<MicrometerEventListenerFactory> getProviderFactoryClass() {
-		return MicrometerEventListenerFactory.class;
-	}
-}

src/main/resources/META-INF/services/org.keycloak.events.EventListenerSpi

@@ -1 +0,0 @@
-io.kokuwa.keycloak.metrics.MicrometerEventListenerSpi