Remove pusher support because it's covered by notifications

app/models/project_services/pipelines_email_service.rb

 class PipelinesEmailService < Service
   prop_accessor :recipients
-  boolean_accessor :add_pusher
   boolean_accessor :notify_only_broken_pipelines
   validates :recipients,
     presence: true,
-    if: ->(s) { s.activated? && !s.add_pusher? }
+    if: ->(s) { s.activated? }
 
   def initialize_properties
     self.properties ||= { notify_only_broken_pipelines: true }
@@ -58,9 +57,6 @@ class PipelinesEmailService < Service
         name: 'recipients',
         placeholder: 'Emails separated by comma' },
       { type: 'checkbox',
-        name: 'add_pusher',
-        label: 'Add pusher to recipients list' },
-      { type: 'checkbox',
         name: 'notify_only_broken_pipelines' },
     ]
   end
@@ -85,12 +81,6 @@ class PipelinesEmailService < Service
   end
 
   def retrieve_recipients(data)
-    all_recipients = recipients.to_s.split(',').reject(&:blank?)
-
-    if add_pusher? && data[:user].try(:[], :email)
-      all_recipients << data[:user][:email]
-    end
-
-    all_recipients
+    recipients.to_s.split(',').reject(&:blank?)
   end
 end

spec/models/project_services/pipeline_email_service_spec.rb

@@ -23,14 +23,6 @@ describe PipelinesEmailService do
       end
 
       it { is_expected.to validate_presence_of(:recipients) }
-
-      context 'when pusher is added' do
-        before do
-          subject.add_pusher = true
-        end
-
-        it { is_expected.not_to validate_presence_of(:recipients) }
-      end
     end
 
     context 'when service is inactive' do