Attend to PR suggestions from reviewer.

Author: shepazon

swift/example_code/s3/presigned-urls/Sources/entry.swift

@@ -2,7 +2,9 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 /// A simple example that shows how to use the AWS SDK for Swift to
-/// authenticate using optional static credentials and an AWS IAM role ARN.
+/// perform file uploads and downloads to Amazon S3, both with and
+/// without presigned requests. Also included is code to perform
+/// multi-part uploads.
 
 // snippet-start:[swift.s3.presigned.imports]
 import ArgumentParser
@@ -13,10 +15,6 @@ import Smithy
 import SmithyHTTPAPI
 // snippet-end:[swift.s3.presigned.imports]
 
-// Import ClientRuntime for logging controls
-
-import ClientRuntime
-
 // -MARK: - Async command line tool
 
 struct ExampleCommand: ParsableCommand {
@@ -488,9 +486,6 @@ struct Main {
     static func main() async {
         let args = Array(CommandLine.arguments.dropFirst())
 
-        await SDKLoggingSystem().initialize(logLevel: .critical)
-        SDKDefaultIO.setLogLevel(level: .fatal)
-
         do {
             let command = try ExampleCommand.parse(args)
             try await command.runAsync()