Removing the _op_documentIdPathDepotMapping tags

Removing the _op_documentIdPathDepotMapping tags for billing topics. 
Teams thread with the devs: https://teams.microsoft.com/l/message/19:[email protected]/1585707760512?tenantId=72f988bf-86f1-41af-91ab-2d7cd011db47&groupId=de9ddba4-2574-4830-87ed-41668c07a1ca&parentMessageId=1585707760512&teamName=Docs%20Support&channelName=General&createdTime=1585707760512

Author: JasonWHowell

docfx.json

@@ -126,72 +126,6 @@
         "articles/iot-central/": {
           "depot_name": "MSDN.microsoft-iot-central",
           "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-add-change-azure-subscription-administrator.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-add-office-365-tenant-to-azure-subscription.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-azure-subscription-past-due-balance.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-buy-sign-up-azure-subscription.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-cannot-login-subscription.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-credit-card-fails-during-azure-sign-up.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-download-azure-invoice-daily-usage-date.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-how-to-cancel-azure-subscription.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-how-to-change-azure-account-profile.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-how-to-change-credit-card.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-how-to-switch-azure-offer.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-set-up-alerts.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-subscription-become-disable.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-subscription-transfer.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-troubleshoot-azure-sign-up-issues.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-understand-your-azure-marketplace-charges.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-understand-your-bill.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-upgrade-azure-subscription.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-usage-rate-card-overview.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-usage-rate-card-partner-solution-cloudcruiser.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-usage-rate-card-partner-solution-cloudyn.md": {
-          "folder_relative_path_in_docset": "articles"
-        },
-        "articles/billing/billing-use-existing-office-365-account-azure-subscription.md": {
-          "folder_relative_path_in_docset": "articles"
         }
       }
     },