ux: remove duplicate placeholder attribute

public/app/features/templating/partials/editor.html

@@ -115,7 +115,7 @@
 
 			<div class="gf-form">
 				<span class="gf-form-label width-9">Values</span>
-				<input type="text" class="gf-form-input" placeholder="name" ng-model='current.query' placeholder="1m,10m,1h,6h,1d,7d" ng-model-onblur ng-change="runQuery()" required></input>
+				<input type="text" class="gf-form-input" ng-model='current.query' placeholder="1m,10m,1h,6h,1d,7d" ng-model-onblur ng-change="runQuery()" required></input>
 			</div>
 
 			<div class="gf-form-inline">