egl: Remove retire event.

Test: adb shell /data/nativetest/libgui_test/libgui_test
  --gtest_filter=*GetFrameTimestamps*

Change-Id: Ibf63d22e42ae52307662107eec50f80de0e703f5
diff --git a/opengl/specs/README b/opengl/specs/README
index a7a9785..27289e4 100644
--- a/opengl/specs/README
+++ b/opengl/specs/README
@@ -30,7 +30,6 @@
 0x3155               EGL_LAST_COMPOSITION_START_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
 0x3156               EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
 0x3157               EGL_DISPLAY_PRESENT_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3158               EGL_DISPLAY_RETIRE_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3159               EGL_DEQUEUE_READY_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x315A               EGL_READS_DONE_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x315B - 0x315F      (unused)
+0x3158               EGL_DEQUEUE_READY_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3159               EGL_READS_DONE_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x315A - 0x315F      (unused)