Fix starting page server in non-daemonize mode.

Commit 746f667311 moved the "chdir" earlier in the startup sequence,
before daemonizing. But it forgot to remove a corresponding chdir call
later in the sequence when not in daemonize mode. As a result, if you
tried to start the pageserver without the --daemonize option, it always
failed with "No such file or directory" error.

pageserver/src/bin/pageserver.rs

@@ -195,14 +195,6 @@ fn start_pageserver(conf: &PageServerConf) -> Result<()> {
             Ok(_) => info!("Success, daemonized"),
             Err(e) => error!("Error, {}", e),
         }
-    } else {
-        // change into the repository directory. In daemon mode, Daemonize
-        // does this for us.
-        std::env::set_current_dir(&conf.workdir)?;
-        info!(
-            "Changed current directory to repository in {:?}",
-            &conf.workdir
-        );
     }
 
     let mut threads = Vec::new();