remove default label from feature request template (grafana#77862)

Author: natellium

.github/ISSUE_TEMPLATE/1-feature_requests.md

@@ -1,7 +1,6 @@
 ---
 name: Feature Requests
 about: Suggest an enhancement or new feature for the Grafana project
-labels: 'type/feature-request'
 ---
 
 <!-- Please only use this template for submitting feature requests -->
@@ -18,4 +17,4 @@ labels: 'type/feature-request'
 
 **Who is this feature for?**
 
-[Add information on what kind of user the feature is for.]
+[Add information on what kind of user the feature is for.]