fix(): remove google-tag-manager, should not track domains that are fundamentally different.

note: This change only affects ionicframework.jp. ionicframework.com is not affected because it does not load this file.

Author: rdlabo

docusaurus.config.js

@@ -88,9 +88,9 @@ module.exports = {
           },
         },
         // Will be passed to @docusaurus/plugin-google-tag-manager.
-        googleTagManager: {
-          containerId: 'GTM-TKMGCBC',
-        },
+        // googleTagManager: {
+        //   containerId: 'GTM-TKMGCBC',
+        // },
         // Will be passed to @docusaurus/theme-classic.
         theme: {
           customCss: [