Revert "feat: Custom fields in pre-chat form (#4135)" (#4182)

This reverts commit e730804b48.

app/controllers/api/v1/accounts/inboxes_controller.rb

@@ -49,6 +49,7 @@ class Api::V1::Accounts::InboxesController < Api::V1::Accounts::BaseController
     return if permitted_params(channel_attributes)[:channel].blank?
 
     validate_email_channel(channel_attributes) if @inbox.inbox_type == 'Email'
+
     @inbox.channel.update!(permitted_params(channel_attributes)[:channel])
     update_channel_feature_flags
   end

app/controllers/api/v1/widget/base_controller.rb

@@ -68,7 +68,7 @@ class Api::V1::Widget::BaseController < ApplicationController
         mergee_contact: @contact
       ).perform
     else
-      @contact.update!(email: email, name: contact_name, phone_number: contact_phone_number)
+      @contact.update!(email: email, name: contact_name)
     end
   end
 
@@ -80,10 +80,6 @@ class Api::V1::Widget::BaseController < ApplicationController
     params[:contact][:name] || contact_email.split('@')[0]
   end
 
-  def contact_phone_number
-    params[:contact][:phone_number]
-  end
-
   def browser_params
     {
       browser_name: browser.name,

app/controllers/api/v1/widget/conversations_controller.rb

@@ -51,7 +51,6 @@ class Api::V1::Widget::ConversationsController < Api::V1::Widget::BaseController
   end
 
   def permitted_params
-    params.permit(:id, :typing_status, :website_token, :email, contact: [:name, :email, :phone_number],
-                                                               message: [:content, :referer_url, :timestamp, :echo_id])
+    params.permit(:id, :typing_status, :website_token, :email, contact: [:name, :email], message: [:content, :referer_url, :timestamp, :echo_id])
   end
 end