Revert "docs: Update for Android 23.0.4"

This reverts commit f34d0e69033165b7a6e9c73b99f4ef6ac36b3896.

Change-Id: I4d521392733f1b028c72d4623d6d69a4c5910bc4
diff --git a/docs/html/preview/setup-sdk.jd b/docs/html/preview/setup-sdk.jd
index a05baa7..af466ab 100644
--- a/docs/html/preview/setup-sdk.jd
+++ b/docs/html/preview/setup-sdk.jd
@@ -202,16 +202,10 @@
   <li>Nexus 7 Wi-Fi (version 2, released in 2013)</li>
 </ul>
 
-<p>In addition, you also get the emulator system images, which include
+<p>In addition, you also get the emulator system images, which includes
 experimental 64-bit system images along with standard 32-bit system images.
 </p>
 
-<p class="note"><strong>Note:</strong> The 64-bit system images require the
-Intel x86 Emulator Accelerator (HAXM) Rev.5 which can be downloaded from the
-<a href="{@docRoot}tools/help/sdk-manager.html">SDK Manager</a><em>Extras</em> 
-folder.</p>
-
-
 <h3 id="installImage">Install the L Preview System Image</h3>
 
 <p class="warning"><b>Warning:</b> This is a preview version of the Android
@@ -224,7 +218,6 @@
 </p>
 
 
-
 <ol>
   <li>Download and uncompress the Android Developer Preview package.
     <table style="width:860px">
@@ -368,4 +361,4 @@
     }
   });
 
-</script>
+</script>
\ No newline at end of file