Overwrite wait value on specific page method

With the default of 10 seconds, the test was taking longer than
needed to pass, and by setting it to 0 it passes immediately.

qa/qa/page/project/issue/show.rb

@@ -127,7 +127,7 @@ module QA
             click_element(:edit_link_labels)
 
             labels.each do |label|
-              has_element?(:labels_block, text: label)
+              has_element?(:labels_block, text: label, wait: 0)
             end
 
             refresh