Remove ensure_storage_path_exists and call sites

ensure_storage_path_exists has already been modified to return true. Now
we can fully remove the method as well as the call sites.

app/models/project.rb

@@ -68,7 +68,7 @@ class Project < ApplicationRecord
     :snippets_access_level, :builds_access_level, :repository_access_level,
     to: :project_feature, allow_nil: true
 
-  delegate :base_dir, :disk_path, :ensure_storage_path_exists, to: :storage
+  delegate :base_dir, :disk_path, to: :storage
 
   delegate :scheduled?, :started?, :in_progress?,
     :failed?, :finished?,
@@ -122,8 +122,6 @@ class Project < ApplicationRecord
   # Storage specific hooks
   after_initialize :use_hashed_storage
   after_create :check_repository_absence!
-  after_create :ensure_storage_path_exists
-  after_save :ensure_storage_path_exists, if: :saved_change_to_namespace_id?
 
   acts_as_ordered_taggable
 

app/models/storage/hashed_project.rb

@@ -27,14 +27,6 @@ module Storage
       "#{base_dir}/#{disk_hash}" if disk_hash
     end
 
-    # TODO: remove this method entirely after 12.4 https://gitlab.com/gitlab-org/gitlab/issues/33244
-    # we no longer need ensure_storage_path_exists to call add_namespace since both creating and moving
-    # repositories will be preceded by a mkdir -p in gitaly to ensure the parent of the destination directory
-    # exists.
-    def ensure_storage_path_exists
-      true
-    end
-
     def rename_repo(old_full_path: nil, new_full_path: nil)
       true
     end

app/models/storage/legacy_project.rb

@@ -23,16 +23,6 @@ module Storage
       project.full_path
     end
 
-    # TODO: remove this method entirely after 12.4 https://gitlab.com/gitlab-org/gitlab/issues/33244
-    # we no longer need ensure_storage_path_exists to call add_namespace since both creating and moving
-    # repositories will be preceded by a mkdir -p in gitaly to ensure the parent of the destination directory
-    # exists.
-    def ensure_storage_path_exists
-      return unless namespace
-
-      true
-    end
-
     def rename_repo(old_full_path: nil, new_full_path: nil)
       old_full_path ||= project.full_path_before_last_save
       new_full_path ||= project.build_full_path

app/services/projects/hashed_storage/migrate_repository_service.rb

@@ -8,7 +8,6 @@ module Projects
 
         @old_storage_version = project.storage_version
         project.storage_version = ::Project::HASHED_STORAGE_FEATURES[:repository]
-        project.ensure_storage_path_exists
 
         @new_disk_path = project.disk_path
 

app/services/projects/hashed_storage/rollback_repository_service.rb

@@ -8,7 +8,6 @@ module Projects
 
         @old_storage_version = project.storage_version
         project.storage_version = nil
-        project.ensure_storage_path_exists
 
         @new_disk_path = project.disk_path
 

ee/app/services/geo/move_repository_service.rb

@@ -30,8 +30,6 @@ module Geo
     private
 
     def move_repositories!
-      project.ensure_storage_path_exists
-
       unless move_project_repository
         log_error('Repository cannot be moved')
         return false

lib/backup/repository.rb

@@ -80,7 +80,6 @@ module Backup
       Project.find_each(batch_size: 1000) do |project|
         progress.print " * #{project.full_path} ... "
         path_to_project_bundle = path_to_bundle(project)
-        project.ensure_storage_path_exists
 
         restore_repo_success = nil
         if File.exist?(path_to_project_bundle)

spec/services/projects/hashed_storage/migrate_repository_service_spec.rb

@@ -91,7 +91,6 @@ describe Projects::HashedStorage::MigrateRepositoryService do
 
       context 'when rollback fails' do
         before do
-          hashed_storage.ensure_storage_path_exists
           gitlab_shell.mv_repository(project.repository_storage, old_disk_path, new_disk_path)
         end
 

spec/services/projects/hashed_storage/rollback_repository_service_spec.rb

@@ -91,7 +91,6 @@ describe Projects::HashedStorage::RollbackRepositoryService, :clean_gitlab_redis
 
       context 'when rollback fails' do
         before do
-          legacy_storage.ensure_storage_path_exists
           gitlab_shell.mv_repository(project.repository_storage, old_disk_path, new_disk_path)
         end
 

spec/workers/namespaceless_project_destroy_worker_spec.rb

@@ -9,7 +9,6 @@ describe NamespacelessProjectDestroyWorker do
 
   before do
     # Stub after_save callbacks that will fail when Project has no namespace
-    allow_any_instance_of(Project).to receive(:ensure_storage_path_exists).and_return(nil)
     allow_any_instance_of(Project).to receive(:update_project_statistics).and_return(nil)
   end