Polish metrics export auto-configuration tests

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/newrelic/NewRelicMetricsExportAutoConfigurationTests.java

@@ -19,7 +19,6 @@ package org.springframework.boot.actuate.autoconfigure.metrics.export.newrelic;
 import java.util.Map;
 
 import io.micrometer.core.instrument.Clock;
-import io.micrometer.influx.InfluxMeterRegistry;
 import io.micrometer.newrelic.NewRelicConfig;
 import io.micrometer.newrelic.NewRelicMeterRegistry;
 import org.junit.Test;
@@ -51,7 +50,7 @@ public class NewRelicMetricsExportAutoConfigurationTests {
 	@Test
 	public void backsOffWithoutAClock() {
 		this.runner.run((context) -> assertThat(context)
-				.doesNotHaveBean(InfluxMeterRegistry.class));
+				.doesNotHaveBean(NewRelicMeterRegistry.class));
 	}
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/signalfx/SignalFxMetricsExportAutoConfigurationTests.java

@@ -19,7 +19,6 @@ package org.springframework.boot.actuate.autoconfigure.metrics.export.signalfx;
 import java.util.Map;
 
 import io.micrometer.core.instrument.Clock;
-import io.micrometer.influx.InfluxMeterRegistry;
 import io.micrometer.signalfx.SignalFxConfig;
 import io.micrometer.signalfx.SignalFxMeterRegistry;
 import org.junit.Test;
@@ -50,7 +49,7 @@ public class SignalFxMetricsExportAutoConfigurationTests {
 	@Test
 	public void backsOffWithoutAClock() {
 		this.runner.run((context) -> assertThat(context)
-				.doesNotHaveBean(InfluxMeterRegistry.class));
+				.doesNotHaveBean(SignalFxMeterRegistry.class));
 	}
 
 	@Test

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/export/simple/SimpleMetricsExportAutoConfigurationTests.java

@@ -37,7 +37,7 @@ import static org.mockito.Mockito.mock;
  *
  * @author Andy Wilkinson
  */
-public class SimplMetricsExportAutoConfigurationTests {
+public class SimpleMetricsExportAutoConfigurationTests {
 
 	private final ApplicationContextRunner runner = new ApplicationContextRunner()
 			.withConfiguration(