Remove Activity#setDisablePreviewScreenshots from system API

Bug: 73250551
Test: N/A
Change-Id: Id7097381f2ea671d82dfe0d0a568d66ace3c6adf
diff --git a/system-api/28.txt b/system-api/28.txt
index 742d0cd..4da1f95 100644
--- a/system-api/28.txt
+++ b/system-api/28.txt
@@ -210,7 +210,6 @@
     method public boolean convertToTranslucent(android.app.Activity.TranslucentConversionListener, android.app.ActivityOptions);
     method public deprecated boolean isBackgroundVisibleBehind();
     method public deprecated void onBackgroundVisibleBehindChanged(boolean);
-    method public void setDisablePreviewScreenshots(boolean);
   }
 
   public static abstract interface Activity.TranslucentConversionListener {