Remove at_most helper on ApplicationRecord

This was just a wrapper used to circumvent lint errors.
This is not how we should deal with lint errors.

We now allow limit calls outside of AR objects:
https://gitlab.com/gitlab-org/gitlab-styles/-/merge_requests/71

app/finders/alert_management/http_integrations_finder.rb

@@ -27,7 +27,7 @@ module AlertManagement
       first_id = project.alert_management_http_integrations
                         .ordered_by_id
                         .select(:id)
-                        .at_most(1)
+                        .limit(1)
 
       @collection = collection.id_in(first_id)
     end

app/models/application_record.rb

@@ -42,10 +42,6 @@ class ApplicationRecord < ActiveRecord::Base
     false
   end
 
-  def self.at_most(count)
-    limit(count)
-  end
-
   def self.safe_find_or_create_by!(*args, &block)
     safe_find_or_create_by(*args, &block).tap do |record|
       raise ActiveRecord::RecordNotFound unless record.present?

app/services/merge_requests/retarget_chain_service.rb

@@ -17,7 +17,7 @@ module MergeRequests
         .opened
         .by_target_branch(merge_request.source_branch)
         .preload_source_project
-        .at_most(MAX_RETARGET_MERGE_REQUESTS)
+        .limit(MAX_RETARGET_MERGE_REQUESTS)
 
       other_merge_requests.find_each do |other_merge_request|
         # Update only MRs on projects that we have access to

ee/app/services/network_policies/resources_service.rb

@@ -48,7 +48,7 @@ module NetworkPolicies
         if environment_id
           Clusters::KubernetesNamespace.where(environment: project.environments.id_in(environment_id))
         else
-          Clusters::KubernetesNamespace.where(environment: project.environments.available.at_most(LIMIT))
+          Clusters::KubernetesNamespace.where(environment: project.environments.available.limit(LIMIT))
         end
 
       kubernetes_namespaces

lib/gitlab/updated_notes_paginator.rb

@@ -38,7 +38,7 @@ module Gitlab
 
     def fetch_page(relation)
       relation = relation.by_updated_at
-      notes = relation.at_most(LIMIT + 1).to_a
+      notes = relation.limit(LIMIT + 1).to_a
 
       return [notes, false] unless notes.size > LIMIT
 

spec/models/application_record_spec.rb

@@ -93,13 +93,6 @@ RSpec.describe ApplicationRecord do
     end
   end
 
-  describe '.at_most' do
-    it 'limits the number of records returned' do
-      create_list(:user, 3)
-      expect(User.at_most(2).count).to eq(2)
-    end
-  end
-
   describe '.where_exists' do
     it 'produces a WHERE EXISTS query' do
       user = create(:user)