[Examples] Remove an extension that was only needed temporarily (#473)

### Motivation

See title.

### Modifications

Removed the extension and bumped dependency versions.

### Result

Closer to 1.0.

### Test Plan

All tests passed.

Examples/hello-world-async-http-client-example/Package.swift

@@ -19,8 +19,8 @@ let package = Package(
     platforms: [.macOS(.v10_15), .iOS(.v13), .tvOS(.v13), .watchOS(.v6), .visionOS(.v1)],
     dependencies: [
         .package(url: "https://github.com/apple/swift-openapi-generator", exact: "1.0.0-alpha.1"),
-        .package(url: "https://github.com/apple/swift-openapi-runtime", exact: "1.0.0-alpha.1"),
-        .package(url: "https://github.com/swift-server/swift-openapi-async-http-client", exact: "1.0.0-alpha.1"),
+        .package(url: "https://github.com/apple/swift-openapi-runtime", from: "1.0.0"),
+        .package(url: "https://github.com/swift-server/swift-openapi-async-http-client", from: "1.0.0"),
     ],
     targets: [
         .executableTarget(

Examples/hello-world-async-http-client-example/Sources/HelloWorldAsyncHTTPClient/HelloWorldAsyncHTTPClient.swift

@@ -22,6 +22,3 @@ import Foundation
         print(try response.ok.body.json.message)
     }
 }
-
-// TODO: Remove this once 1.0.0 is released with https://github.com/swift-server/swift-openapi-async-http-client/pull/32.
-extension AsyncHTTPClientTransport { init() { self.init(configuration: .init()) } }