doc: Remove unimplemented option (SeleniumHQ#2330)

[deploy site]

Author: ShinySaana

website_and_docs/content/documentation/selenium_manager.en.md

@@ -350,7 +350,6 @@ The following environment variables are supported:
 * `SE_EDGEDRIVER`
 * `SE_GECKODRIVER`
 * `SE_IEDRIVER`
-* `SE_SAFARIDRIVER`
 
 For example, to specify the path to the chromedriver, 
 you can set the `SE_CHROMEDRIVER` environment variable to the path of the chromedriver executable.

website_and_docs/content/documentation/selenium_manager.ja.md

@@ -350,7 +350,6 @@ The following environment variables are supported:
 * `SE_EDGEDRIVER`
 * `SE_GECKODRIVER`
 * `SE_IEDRIVER`
-* `SE_SAFARIDRIVER`
 
 For example, to specify the path to the chromedriver,
 you can set the `SE_CHROMEDRIVER` environment variable to the path of the chromedriver executable.

website_and_docs/content/documentation/selenium_manager.pt-br.md

@@ -350,7 +350,6 @@ The following environment variables are supported:
 * `SE_EDGEDRIVER`
 * `SE_GECKODRIVER`
 * `SE_IEDRIVER`
-* `SE_SAFARIDRIVER`
 
 For example, to specify the path to the chromedriver,
 you can set the `SE_CHROMEDRIVER` environment variable to the path of the chromedriver executable.

website_and_docs/content/documentation/selenium_manager.zh-cn.md

@@ -470,7 +470,6 @@ sudo apt-get install libatk-bridge2.0-0
 * `SE_EDGEDRIVER`
 * `SE_GECKODRIVER`
 * `SE_IEDRIVER`
-* `SE_SAFARIDRIVER`
 
 例如, 要指定 chromedriver 的路径, 
 您可以将  `SE_CHROMEDRIVER`  环境变量设置为 chromedriver 可执行文件的路径.