Remove is_author variable from request_decision_component

After moving out some of the authorization logic from
the view component the variable is not longer needed.

src/api/app/components/request_decision_component.rb

@@ -1,11 +1,10 @@
 class RequestDecisionComponent < ApplicationComponent
-  def initialize(bs_request:, action:, is_target_maintainer:, is_author:)
+  def initialize(bs_request:, action:, is_target_maintainer:)
     super
 
     @bs_request = bs_request
     @is_target_maintainer = is_target_maintainer
     @action = action
-    @is_author = is_author
   end
 
   def render?

src/api/app/controllers/webui/request_controller.rb

@@ -534,7 +534,6 @@ def handle_notification
   end
 
   def prepare_request_data
-    @is_author = @bs_request.creator == User.possibly_nobody.login
     @is_target_maintainer = @bs_request.is_target_maintainer?(User.session)
     @my_open_reviews = ReviewsFinder.new(@bs_request.reviews).open_reviews_for_user(User.session).reject(&:staging_project?)
 

src/api/app/views/webui/request/beta_show.html.haml

@@ -115,9 +115,7 @@
                 setInterval(updateChartBuildResults, 60000);
 
               = render AccordionReviewsComponent.new(@request_reviews, @bs_request)
-              = render RequestDecisionComponent.new(bs_request: @bs_request, action: @action,
-                                                    is_target_maintainer: @is_target_maintainer,
-                                                    is_author: @is_author)
+              = render RequestDecisionComponent.new(bs_request: @bs_request, action: @action, is_target_maintainer: @is_target_maintainer)
   = render DeleteConfirmationDialogComponent.new(modal_id: 'delete-comment-modal',
                                                  method: :delete,
                                                  options: { modal_title: 'Delete comment?', remote: true })