feat: do not resolve MX records during configuration

MX record lookup was only used to detect Google Workspace domains.
They can still be configured manually.
We anyway do not want to encourage creating new profiles
with Google Workspace as we don't have Gmail OAUTH2 token anymore
and new users can more easily onboard with a chatmail relay.

deltachat-jsonrpc/src/api.rs

@@ -336,21 +336,10 @@ impl CommandApi {
     /// instead of the domain.
     async fn get_provider_info(
         &self,
-        account_id: u32,
+        _account_id: u32,
         email: String,
     ) -> Result<Option<ProviderInfo>> {
-        let ctx = self.get_context(account_id).await?;
-
-        let proxy_enabled = ctx
-            .get_config_bool(deltachat::config::Config::ProxyEnabled)
-            .await?;
-
-        let provider_info = get_provider_info(
-            &ctx,
-            email.split('@').next_back().unwrap_or(""),
-            proxy_enabled,
-        )
-        .await;
+        let provider_info = get_provider_info(email.split('@').next_back().unwrap_or(""));
         Ok(ProviderInfo::from_dc_type(provider_info))
     }