refactor(tvix/store/blobsvc): make from_addr not async

A previous iteration of this code did actually connect (in the gRPC
client), which was why we had this function async.

However, as the connection there is now lazy too, we can drop the
asyncness in this function.

Change-Id: Idd5bd953a6a1c2334066ee672cfb87fcb74f9f94
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8780
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

tvix/store/src/blobservice/from_addr.rs

@@ -11,7 +11,7 @@ use super::{BlobService, GRPCBlobService, MemoryBlobService, SledBlobService};
 /// - `grpc+*://` ([GRPCBlobService])
 ///
 /// See their [from_url] methods for more details about their syntax.
-pub async fn from_addr(uri: &str) -> Result<Arc<dyn BlobService>, crate::Error> {
+pub fn from_addr(uri: &str) -> Result<Arc<dyn BlobService>, crate::Error> {
     let url = Url::parse(uri).map_err(|e| {
         crate::Error::StorageError(format!("unable to parse url: {}", e.to_string()))
     })?;