Remove experimental prefix for build event output file flags.

It's been about a year since these haven't been necessary.

RELNOTES: None.
PiperOrigin-RevId: 199178625

src/test/java/com/google/devtools/build/lib/buildeventservice/BazelBuildEventServiceModuleTest.java

diff --git a/src/test/java/com/google/devtools/build/lib/buildeventservice/BazelBuildEventServiceModuleTest.java b/src/test/java/com/google/devtools/build/lib/buildeventservice/BazelBuildEventServiceModuleTest.java
index 45cded6..9811f41 100644
--- a/src/test/java/com/google/devtools/build/lib/buildeventservice/BazelBuildEventServiceModuleTest.java
+++ b/src/test/java/com/google/devtools/build/lib/buildeventservice/BazelBuildEventServiceModuleTest.java
@@ -129,9 +129,9 @@
     assertThat(commandOptions).isNotEmpty();
     OptionsParser optionsParser = OptionsParser.newOptionsParser(commandOptions);
     optionsParser.parse(
-        "--experimental_build_event_text_file", "/tmp/foo.txt",
-        "--experimental_build_event_binary_file", "/tmp/foo.bin",
-        "--experimental_build_event_json_file", "/tmp/foo.json");
+        "--build_event_text_file", "/tmp/foo.txt",
+        "--build_event_binary_file", "/tmp/foo.bin",
+        "--build_event_json_file", "/tmp/foo.json");
     BuildEventStreamOptions options = optionsParser.getOptions(BuildEventStreamOptions.class);
     assertThat(options.getBuildEventTextFile()).isEqualTo("/tmp/foo.txt");
     assertThat(options.getBuildEventBinaryFile()).isEqualTo("/tmp/foo.bin");