Revert "Search for suggestion matches across PREVIEW_RESOURCES."

This broke search suggestions.

This reverts commit 882adaed0e475b5ebd0ba81b5f1162b53f5e69f4.

Change-Id: I830339887955dfe86d502e54860d90ce59394d69
diff --git a/tools/droiddoc/templates-sdk/assets/js/docs.js b/tools/droiddoc/templates-sdk/assets/js/docs.js
index 7c2af5d..372f257 100644
--- a/tools/droiddoc/templates-sdk/assets/js/docs.js
+++ b/tools/droiddoc/templates-sdk/assets/js/docs.js
@@ -2362,7 +2362,7 @@
           }
 
           // Search for Preview Guides
-          for (var i=0; i<PREVIEW_RESOURCES.length; i++) {
+          for (var i=0; i<_RESOURCES.length; i++) {
             // current search comparison, with counters for tag and title,
             // used later to improve ranking
             var s = _RESOURCES[i];