Merge PR #390: Update jfr-events module to follow style guide

Author: trask

jfr-events/src/test/java/io/opentelemetry/contrib/jfrevent/JfrSpanProcessorTest.java

@@ -5,7 +5,7 @@
 
 package io.opentelemetry.contrib.jfrevent;
 
-import static org.assertj.core.api.AssertionsForInterfaceTypes.assertThat;
+import static org.assertj.core.api.Assertions.assertThat;
 
 import io.opentelemetry.api.trace.Span;
 import io.opentelemetry.api.trace.Tracer;
@@ -52,7 +52,7 @@ void tearDown() {
    * @throws java.io.IOException on io error
    */
   @Test
-  public void basicSpan() throws IOException {
+  void basicSpan() throws IOException {
     Path output = Files.createTempFile("test-basic-span", ".jfr");
 
     try {
@@ -89,7 +89,7 @@ public void basicSpan() throws IOException {
    * @throws java.lang.InterruptedException interrupted sleep
    */
   @Test
-  public void basicSpanWithScope() throws IOException, InterruptedException {
+  void basicSpanWithScope() throws IOException, InterruptedException {
     Path output = Files.createTempFile("test-basic-span-with-scope", ".jfr");
 
     try {