docs: Removed navigation heading for Develop > Preview

Change-Id: Id6b86346bf5bcb562c167d48f2e8b3b73d94e0de
diff --git a/tools/droiddoc/templates-sdk/assets/js/docs.js b/tools/droiddoc/templates-sdk/assets/js/docs.js
index d88c0e6..1550b61 100644
--- a/tools/droiddoc/templates-sdk/assets/js/docs.js
+++ b/tools/droiddoc/templates-sdk/assets/js/docs.js
@@ -202,8 +202,6 @@
       subNavEl.find("li.google > a").addClass("selected");
     } else if ($("body").hasClass("samples")) {
       subNavEl.find("li.samples > a").addClass("selected");
-    } else if ($("body").hasClass("preview")) {
-      subNavEl.find("li.preview > a").addClass("selected");
     } else {
       parentNavEl.removeClass('has-subnav').addClass("selected");
     }
@@ -2361,37 +2359,6 @@
             }
           }
 
-          // Search for Preview Guides
-          for (var i=0; i<PREVIEW_RESOURCES.length; i++) {
-            // current search comparison, with counters for tag and title,
-            // used later to improve ranking
-            var s = PREVIEW_RESOURCES[i];
-            s.matched_tag = 0;
-            s.matched_title = 0;
-            var matched = false;
-
-            // Check if query matches any tags; work backwards toward 1 to assist ranking
-            for (var j = s.keywords.length - 1; j >= 0; j--) {
-              // it matches a tag
-              if (s.keywords[j].toLowerCase().indexOf(queryStr) == 0) {
-                matched = true;
-                s.matched_tag = j + 1; // add 1 to index position
-              }
-            }
-            // Check if query matches the doc title, but only for current language
-            if (s.lang == currentLang) {
-              // if query matches the doc title
-              if (s.title.toLowerCase().indexOf(queryStr) == 0) {
-                matched = true;
-                s.matched_title = 1;
-              }
-            }
-            if (matched) {
-              gDocsMatches[matchedCountDocs] = s;
-              matchedCountDocs++;
-            }
-          }
-
           // Rank/sort all the matched pages
           rank_autocomplete_doc_results(text, gDocsMatches);
         }
@@ -3747,7 +3714,7 @@
 
     return $el;
   }
-  
+
   function createResponsiveFlowColumn(cardSize) {
     var cardWidth = parseInt(cardSize.match(/(\d+)/)[1], 10);
     var column = $('<div>').addClass('col-' + (cardWidth / 3) + 'of6');
@@ -3788,7 +3755,7 @@
 
       var cardSize = cardSizes[j++ % cardSizes.length];
       cardSize = cardSize.replace(/^\s+|\s+$/,'');
-      
+
       var column = createResponsiveFlowColumn(cardSize).appendTo(cardParent);
 
       // A stack has a third dimension which is the number of stacked items