remove unnecessary charset

Author: jaydeluca

instrumentation-docs/src/main/java/io/opentelemetry/instrumentation/docs/DocGeneratorApplication.java

@@ -12,7 +12,6 @@
 import io.opentelemetry.instrumentation.docs.utils.YamlHelper;
 import java.io.BufferedWriter;
 import java.io.IOException;
-import java.nio.charset.Charset;
 import java.nio.file.Files;
 import java.nio.file.Paths;
 import java.util.List;
@@ -38,8 +37,7 @@ public static void main(String[] args) throws IOException {
     List<InstrumentationModule> modules = new InstrumentationAnalyzer(fileManager).analyze();
 
     try (BufferedWriter writer =
-        Files.newBufferedWriter(
-            Paths.get(baseRepoPath + "docs/instrumentation-list.yaml"), Charset.defaultCharset())) {
+        Files.newBufferedWriter(Paths.get(baseRepoPath + "docs/instrumentation-list.yaml"))) {
       writer.write("# This file is generated and should not be manually edited.\n");
       writer.write("# The structure and contents are a work in progress and subject to change.\n");
       writer.write(