Remove FDW LFS objects models

FDW queries to replicate LFS objects has been removed. These
models are not necessary anymore.

ee/app/models/geo/fdw/lfs_object.rb

-# frozen_string_literal: true
-
-module Geo
-  module Fdw
-    class LfsObject < ::Geo::BaseFdw
-      include ObjectStorable
-
-      STORE_COLUMN = :file_store
-
-      self.primary_key = :id
-      self.table_name = Gitlab::Geo::Fdw.foreign_table_name('lfs_objects')
-
-      has_many :lfs_objects_projects, class_name: 'Geo::Fdw::LfsObjectsProject'
-      has_many :projects, class_name: 'Geo::Fdw::Project', through: :lfs_objects_projects
-
-      scope :project_id_in, ->(ids) { joins(:projects).merge(Geo::Fdw::Project.id_in(ids)) }
-
-      class << self
-        def failed
-          inner_join_registry
-            .merge(Geo::LfsObjectRegistry.failed)
-        end
-
-        def inner_join_registry
-          join_statement =
-            arel_table
-              .join(registry_table, Arel::Nodes::InnerJoin)
-              .on(arel_table[:id].eq(registry_table[:lfs_object_id]))
-
-          joins(join_statement.join_sources)
-        end
-
-        def missing_registry
-          left_outer_join_registry
-            .where(registry_table[:id].eq(nil))
-        end
-
-        def missing_on_primary
-          inner_join_registry
-            .merge(Geo::LfsObjectRegistry.synced.missing_on_primary)
-        end
-
-        def synced
-          inner_join_registry
-            .merge(Geo::LfsObjectRegistry.synced)
-        end
-
-        private
-
-        def registry_table
-          Geo::LfsObjectRegistry.arel_table
-        end
-
-        def left_outer_join_registry
-          join_statement =
-            arel_table
-              .join(registry_table, Arel::Nodes::OuterJoin)
-              .on(arel_table[:id].eq(registry_table[:lfs_object_id]))
-
-          joins(join_statement.join_sources)
-        end
-      end
-    end
-  end
-end

ee/app/models/geo/fdw/lfs_objects_project.rb

-# frozen_string_literal: true
-
-module Geo
-  module Fdw
-    class LfsObjectsProject < ::Geo::BaseFdw
-      self.table_name = Gitlab::Geo::Fdw.foreign_table_name('lfs_objects_projects')
-
-      belongs_to :lfs_object, class_name: 'Geo::Fdw::LfsObject', inverse_of: :projects
-      belongs_to :project, class_name: 'Geo::Fdw::Project', inverse_of: :lfs_objects
-
-      scope :project_id_in, ->(ids) { where(project_id: ids) }
-    end
-  end
-end

ee/app/models/geo/fdw/project.rb

@@ -10,8 +10,6 @@ module Geo
       self.table_name = Gitlab::Geo::Fdw.foreign_table_name('projects')
 
       has_many :job_artifacts, class_name: 'Geo::Fdw::Ci::JobArtifact'
-      has_many :lfs_objects_projects, class_name: 'Geo::Fdw::LfsObjectsProject'
-      has_many :lfs_objects, class_name: 'Geo::Fdw::LfsObject', through: :lfs_objects_projects
       has_many :container_repositories, class_name: 'Geo::Fdw::ContainerRepository'
 
       belongs_to :namespace, class_name: 'Geo::Fdw::Namespace'

ee/spec/models/geo/fdw/lfs_object_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Geo::Fdw::LfsObject, :geo, type: :model do
-  context 'relationships' do
-    it { is_expected.to have_many(:lfs_objects_projects).class_name('Geo::Fdw::LfsObjectsProject') }
-    it { is_expected.to have_many(:projects).class_name('Geo::Fdw::Project').through(:lfs_objects_projects) }
-  end
-
-  describe '.missing_registry', :geo_fdw do
-    it "returns lfs objects that don't have a corresponding registry entry" do
-      missing_registry_entries = create_list(:lfs_object, 2)
-
-      create_list(:lfs_object, 2).each do |lfs|
-        create(:geo_lfs_object_registry, lfs_object_id: lfs.id)
-      end
-
-      expect(described_class.missing_registry).to match_ids(missing_registry_entries)
-    end
-  end
-end

ee/spec/models/geo/fdw/lfs_objects_project_spec.rb

-# frozen_string_literal: true
-
-require 'spec_helper'
-
-RSpec.describe Geo::Fdw::LfsObjectsProject, :geo, type: :model do
-  context 'relationships' do
-    it { is_expected.to belong_to(:lfs_object).class_name('Geo::Fdw::LfsObject').inverse_of(:projects) }
-    it { is_expected.to belong_to(:project).class_name('Geo::Fdw::Project').inverse_of(:lfs_objects) }
-  end
-end

ee/spec/models/geo/fdw/project_spec.rb

@@ -5,8 +5,6 @@ require 'spec_helper'
 RSpec.describe Geo::Fdw::Project, :geo_fdw, type: :model do
   context 'relationships' do
     it { is_expected.to have_many(:job_artifacts).class_name('Geo::Fdw::Ci::JobArtifact') }
-    it { is_expected.to have_many(:lfs_objects_projects).class_name('Geo::Fdw::LfsObjectsProject') }
-    it { is_expected.to have_many(:lfs_objects).class_name('Geo::Fdw::LfsObject').through(:lfs_objects_projects) }
     it { is_expected.to have_many(:container_repositories).class_name('Geo::Fdw::ContainerRepository') }
   end