Roll-back the roulette timezone experiment

Signed-off-by: Rémy Coutable <remy@rymai.me>

danger/roulette/Dangerfile

@@ -40,7 +40,6 @@ MARKDOWN
 
 OPTIONAL_REVIEW_TEMPLATE = "%{role} review is optional for %{category}".freeze
 NOT_AVAILABLE_TEMPLATE = 'No %{role} available'.freeze
-TIMEZONE_EXPERIMENT = true
 
 def note_for_spins_role(spins, role)
   spins.each do |spin|
@@ -81,12 +80,10 @@ categories << :database if helper.gitlab_helper&.mr_labels&.include?('database')
 if changes.any?
   project = helper.project_name
 
-  timezone_roulette_spins = roulette.spin(project, categories, timezone_experiment: true)
   random_roulette_spins = roulette.spin(project, categories, timezone_experiment: false)
 
-  rows = timezone_roulette_spins.map do |spin|
-    fallback_spin = random_roulette_spins.find { |random_roulette_spins| random_roulette_spins.category == spin.category }
-    markdown_row_for_spins(spin.category, [spin, fallback_spin])
+  rows = random_roulette_spins.map do |spin|
+    markdown_row_for_spins(spin.category, [spin])
   end
 
   markdown(MESSAGE)