Remove method as using nested resource routes

We introduced hidden_clusterable_fields in this MR but it is no longer
needed as we have gone back to nested resource routes which should
provide the params such as `project_id`.

app/helpers/clusters_helper.rb

@@ -14,10 +14,4 @@ module ClustersHelper
       render 'clusters/clusters/gcp_signup_offer_banner'
     end
   end
-
-  def hidden_clusterable_fields
-    clusterable.clusterable_params.map do |key, value|
-      hidden_field_tag(key, value)
-    end.reduce(&:safe_concat)
-  end
 end

app/views/clusters/clusters/_integration_form.html.haml

 = form_for @cluster, url: clusterable.cluster_path(@cluster), as: :cluster do |field|
   = form_errors(@cluster)
-  = hidden_clusterable_fields
   .form-group
     %h5= s_('ClusterIntegration|Integration status')
     %label.append-bottom-0.js-cluster-enable-toggle-area

app/views/clusters/clusters/gcp/_form.html.haml

@@ -14,7 +14,6 @@
 
 = form_for @gcp_cluster, html: { class: 'js-gke-cluster-creation prepend-top-20', data: { token: token_in_session } }, url: clusterable.create_gcp_clusters_path, as: :cluster do |field|
   = form_errors(@gcp_cluster)
-  = hidden_clusterable_fields
   .form-group
     = field.label :name, s_('ClusterIntegration|Kubernetes cluster name'), class: 'label-bold'
     = field.text_field :name, class: 'form-control', placeholder: s_('ClusterIntegration|Kubernetes cluster name')

app/views/clusters/clusters/gcp/_show.html.haml

@@ -8,7 +8,6 @@
 
 = form_for @cluster, url: clusterable.cluster_path(@cluster), as: :cluster do |field|
   = form_errors(@cluster)
-  = hidden_clusterable_fields
 
   = field.fields_for :platform_kubernetes, @cluster.platform_kubernetes do |platform_kubernetes_field|
     .form-group

app/views/clusters/clusters/user/_form.html.haml

 = form_for @user_cluster, url: clusterable.create_user_clusters_path, as: :cluster do |field|
   = form_errors(@user_cluster)
-  = hidden_clusterable_fields
   .form-group
     = field.label :name, s_('ClusterIntegration|Kubernetes cluster name'), class: 'label-bold'
     = field.text_field :name, class: 'form-control', placeholder: s_('ClusterIntegration|Kubernetes cluster name')

app/views/clusters/clusters/user/_show.html.haml

 = form_for @cluster, url: clusterable.cluster_path(@cluster), as: :cluster do |field|
   = form_errors(@cluster)
-  = hidden_clusterable_fields
   .form-group
     = field.label :name, s_('ClusterIntegration|Kubernetes cluster name'), class: 'label-bold'
     = field.text_field :name, class: 'form-control', placeholder: s_('ClusterIntegration|Kubernetes cluster name')

spec/presenters/project_clusterable_presenter_spec.rb

@@ -74,10 +74,4 @@ describe ProjectClusterablePresenter do
 
     it { is_expected.to eq(project_cluster_path(project, cluster)) }
   end
-
-  describe '#clusterable_params' do
-    subject { presenter.clusterable_params }
-
-    it { is_expected.to eq({ project_id: project.to_param, namespace_id: project.namespace.to_param }) }
-  end
 end