Remove the mention of HOME environment variable (#328)

Co-authored-by: Sergey Dolin <v-sedoli@micorosoft.com>

Author: dsame

content/actions/reference/environment-variables.md

@@ -39,7 +39,6 @@ We strongly recommend that actions use environment variables to access the files
 | Environment variable | Description |
 | ---------------------|------------ |
 | `CI` | Always set to `true`. |
-| `HOME` | The path to the {% data variables.product.prodname_dotcom %} home directory used to store user data. For example, `/github/home`. |
 | `GITHUB_WORKFLOW` | The name of the workflow. |
 | `GITHUB_RUN_ID` | {% data reusables.github-actions.run_id_description %} |
 | `GITHUB_RUN_NUMBER` | {% data reusables.github-actions.run_number_description %} |