fix(docs): update docs with current samples

Author: sofisl

README.md

@@ -64,7 +64,6 @@ has instructions for running the samples.
 | Sample                      | Source Code                       | Try it |
 | --------------------------- | --------------------------------- | ------ |
 | Quickstart_installed_oauth2 | [source code](https://github.com/googleapis/nodejs-analytics-admin/blob/master/samples/quickstart_installed_oauth2.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-analytics-admin&page=editor&open_in_editor=samples/quickstart_installed_oauth2.js,samples/README.md) |
-| Quickstart_service_account.js | [source code](https://github.com/googleapis/nodejs-analytics-admin/blob/master/samples/quickstart_service_account.js.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-analytics-admin&page=editor&open_in_editor=samples/quickstart_service_account.js.js,samples/README.md) |
 
 
 

protos/protos.d.ts

@@ -13,7 +13,6 @@
 * [Before you begin](#before-you-begin)
 * [Samples](#samples)
   * [Quickstart_installed_oauth2](#quickstart_installed_oauth2)
-  * [Quickstart_service_account.js](#quickstart_service_account.js)
 
 ## Before you begin
 
@@ -42,23 +41,6 @@ __Usage:__
 `node samples/quickstart_installed_oauth2.js`
 
 
------
-
-
-
-
-### Quickstart_service_account.js
-
-View the [source code](https://github.com/googleapis/nodejs-analytics-admin/blob/master/samples/quickstart_service_account.js.js).
-
-[![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-analytics-admin&page=editor&open_in_editor=samples/quickstart_service_account.js.js,samples/README.md)
-
-__Usage:__
-
-
-`node samples/quickstart_service_account.js.js`
-
-
 
 
 

protos/protos.js

@@ -4,22 +4,22 @@
       "git": {
         "name": ".",
         "remote": "git@github.com:googleapis/nodejs-analytics-admin.git",
-        "sha": "18d418968236858c39373642c72e1a671f65e049"
+        "sha": "55f4366d75a09b697ac1b7d1ef416cf27448832a"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "fbf9396664b766a08d92da9d4f31be019a847c39",
-        "internalRef": "324209019"
+        "sha": "868615a5c1c1059c636bb3d82a555edb1d5a251e",
+        "internalRef": "324294521"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "39b527a39f5cd56d4882b3874fc08eed4756cebe"
+        "sha": "4f8f5dc24af79694887385015294e4dbb214c352"
       }
     }
   ],