remove otlp format as Async-profiler maked it is experimental

Author: smiklosovic

src/java/org/apache/cassandra/service/AsyncProfilerService.java

@@ -91,7 +91,7 @@ public static String parseEvents(String rawString)
 
     public enum AsyncProfilerFormat
     {
-        flat, traces, collapsed, flamegraph, tree, jfr, otlp;
+        flat, traces, collapsed, flamegraph, tree, jfr;
 
         public static String parseFormat(String rawFormat)
         {

src/java/org/apache/cassandra/tools/nodetool/AsyncProfileCommandGroup.java

@@ -84,8 +84,6 @@ private static String getOutputFileName(AsyncProfilerFormat outputFormat)
 
         if (outputFormat == AsyncProfilerFormat.jfr)
             filename += ".jfr";
-        else if (outputFormat == AsyncProfilerFormat.otlp)
-            filename += ".otlp";
         else
             filename += ".html";
 
@@ -114,7 +112,7 @@ public static class AsyncProfileStartCommand extends AbstractCommand
         public String duration = "60s";
 
         @Option(names = { "-f", "--format" },
-        description = "Output format, one of 'flat', 'traces', 'collapsed', 'flamegraph', 'tree', 'jfr', 'otlp', defaults to 'flamegraph'")
+        description = "Output format, one of 'flat', 'traces', 'collapsed', 'flamegraph', 'tree', 'jfr', defaults to 'flamegraph'")
         public AsyncProfilerFormat outputFormat = AsyncProfilerFormat.flamegraph;
 
         @Override