dashboards: Fix issue with first click when expanding folder in search

Fixes #10580

public/app/core/components/search/search.html

@@ -12,7 +12,6 @@
 						ng-model-options="{ debounce: 500 }"
 						spellcheck='false'
 						ng-change="ctrl.search()"
-						ng-blur="ctrl.searchInputBlur()"
             />
 
 		<div class="search-field-spacer"></div>

public/app/core/components/search/search.ts

@@ -90,10 +90,6 @@ export class SearchCtrl {
     }
   }
 
-  searchInputBlur() {
-    this.search();
-  }
-
   onFilterboxClick() {
     this.giveSearchFocus = 0;
     this.preventClose();