docs: Remove erroneous ENV restriction

Author: FoxxMD

docsite/docs/configuration/sources/koito-source.mdx

@@ -19,7 +19,6 @@ To  _scrobble to_ a Koito server, create a [Koito (Client)](/configuration/clien
 
 See the [Koito (Client)](/configuration/clients/koito) configuration for general setup. The only difference for **Source** configuration:
 
-* Cannot be setup with ENV config 
 * [File/AIO config](/configuration?configType=file#configuration-types) must include `"configureAs": "source"`
 
 #### Configuration

docsite/docs/configuration/sources/maloja.mdx

@@ -17,7 +17,6 @@ To  _scrobble to_ a Maloja server, create a [Maloja (Client)](/configuration/cli
 
 See the [Maloja (Client)](/configuration/clients/maloja) configuration for general setup. The only difference for **Source** configuration:
 
-* Cannot be setup with ENV config 
 * [File/AIO config](/configuration?configType=file#configuration-types)  must include `"configureAs": "source"`
 
 ## Configuration

docsite/docs/configuration/sources/rocksky-source.mdx

@@ -29,7 +29,6 @@ Follow the **Setup** instructions in the [Rocksky (Client)](/configuration/clien
 
 See the [Rocksky (Client)](/configuration/clients/rocksky#setup) configuration for general setup. The only difference for **Source** configuration:
 
-* Cannot be setup with ENV config 
 * [File/AIO config](/configuration?configType=file#configuration-types) must include `"configureAs": "source"`
 
 <Config config="RockskyClientConfig" fileContent={JsonConfig} name="rocksky">

docsite/docs/configuration/sources/tealfm-source.mdx

@@ -29,7 +29,6 @@ Follow the **Setup** instructions in the [teal.fm (Client)](/configuration/clien
 
 See the [teal.fm (Client)](/configuration/clients/tealfm#setup) configuration for general setup. The main differences for **Source** configuration:
 
-* Cannot be setup with ENV config 
 * [File/AIO config](/configuration?configType=file#configuration-types) must include `"configureAs": "source"`
 
 ### Service Filtering