Remove unused for milestone scope

app/models/project.rb

@@ -537,7 +537,6 @@ class Project < ApplicationRecord
   scope :visible_to_user_and_access_level, ->(user, access_level) { where(id: user.authorized_projects.where('project_authorizations.access_level >= ?', access_level).select(:id).reorder(nil)) }
   scope :archived, -> { where(archived: true) }
   scope :non_archived, -> { where(archived: false) }
-  scope :for_milestones, ->(ids) { joins(:milestones).where('milestones.id' => ids).distinct }
   scope :with_push, -> { joins(:events).merge(Event.pushed_action) }
   scope :with_project_feature, -> { joins('LEFT JOIN project_features ON projects.id = project_features.project_id') }
   scope :with_jira_dvcs_cloud, -> { joins(:feature_usage).merge(ProjectFeatureUsage.with_jira_dvcs_integration_enabled(cloud: true)) }