Remove unncessary if-statement, thanks @zj

app/views/projects/pipeline_schedules/_form.html.haml

@@ -27,9 +27,8 @@
       %label.label-light
         #{ _('Variables') }
       %ul.js-pipeline-variable-list.pipeline-variable-list
-        - if @schedule.variables.present?
-          - @schedule.variables.each_with_index do |variable, i|
-            = render 'variable_row', id: variable.id, key: variable.key, value: variable.value
+        - @schedule.variables.each_with_index do |variable, i|
+          = render 'variable_row', id: variable.id, key: variable.key, value: variable.value
         = render 'variable_row'
   .form-group
     .col-md-9