Merge pull request #20 from optuna/remove-config-toml

Remove documents about `config.toml`

docs/source/faq.rst

@@ -10,39 +10,19 @@ How to opt-out of the anonymous analytics?
 OptunaHub collects anonymous usage data to improve the service.
 The data is used to understand how users interact with the service and to identify areas for improvement.
 
-Youn can opt-out of the anonymous analytics in the following ways.
-
-- By setting the environment variable `OPTUNAHUB_NO_ANALYTICS` to `1`
-- By setting `no_analytics = false` in `config.toml`
+Youn can opt-out of the anonymous analytics by setting the environment variable `OPTUNAHUB_NO_ANALYTICS` to `1`
 
 .. code-block:: shell
 
       export OPTUNAHUB_NO_ANALYTICS=1
 
 
-`config.toml`
-
-.. code-block:: toml
-
-      no_analytics = false
-
-The settings are prioritized in the order listed above.
-
-The configuration file (`config.toml`) of OptunaHub is placed in the following locations.
-
-- (UNIX-like) `XDG_CONFIG_HOME/optunahub/config.toml`
-- (Windows) `%APPDATA%/optunahub/config.toml`
-
-`XDG_CONFIG_HOME` is usually `~/.config` on UNIX-like systems.
-
-
 How to configure the package cache?
 -----------------------------------
 
 OptunaHub caches the downloaded packages in the following locations.
 
 - The directory defined by `OPTUNAHUB_CACHE_HOME` environment variable
-- The `cache_home` value in `config.toml`
 - (UNIX-like) `XDG_CACHE_HOME/optunahub`
 - (Windows) `%LOCALAPPDATA%/optunahub`