Remove Swift dependency (#2580)

diff --git a/packages/espresso/CHANGELOG.md b/packages/espresso/CHANGELOG.md
index 0fbb332..7aab8f4 100644
--- a/packages/espresso/CHANGELOG.md
+++ b/packages/espresso/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.0.1+4
+
+* Remove Swift dependency.
+
 ## 0.0.1+3
 
 * Make the pedantic dev_dependency explicit.
diff --git a/packages/espresso/ios/Classes/SwiftEspressoPlugin.swift b/packages/espresso/ios/Classes/SwiftEspressoPlugin.swift
deleted file mode 100644
index 2ff3024..0000000
--- a/packages/espresso/ios/Classes/SwiftEspressoPlugin.swift
+++ /dev/null
@@ -1,14 +0,0 @@
-import Flutter
-import UIKit
-
-public class SwiftEspressoPlugin: NSObject, FlutterPlugin {
-  public static func register(with registrar: FlutterPluginRegistrar) {
-    let channel = FlutterMethodChannel(name: "espresso", binaryMessenger: registrar.messenger())
-    let instance = SwiftEspressoPlugin()
-    registrar.addMethodCallDelegate(instance, channel: channel)
-  }
-
-  public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
-    result("iOS " + UIDevice.current.systemVersion)
-  }
-}
diff --git a/packages/espresso/ios/espresso.podspec b/packages/espresso/ios/espresso.podspec
index cd64afa..8c35525 100644
--- a/packages/espresso/ios/espresso.podspec
+++ b/packages/espresso/ios/espresso.podspec
@@ -14,10 +14,10 @@
   s.author           = { 'Your Company' => 'email@example.com' }
   s.source           = { :path => '.' }
   s.source_files = 'Classes/**/*'
+  s.public_header_files = 'Classes/**/*.h'
   s.dependency 'Flutter'
   s.platform = :ios, '8.0'
 
   # Flutter.framework does not contain a i386 slice. Only x86_64 simulators are supported.
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'VALID_ARCHS[sdk=iphonesimulator*]' => 'x86_64' }
-  s.swift_version = '5.0'
 end
diff --git a/packages/espresso/pubspec.yaml b/packages/espresso/pubspec.yaml
index f59b414..50f613a 100644
--- a/packages/espresso/pubspec.yaml
+++ b/packages/espresso/pubspec.yaml
@@ -1,6 +1,6 @@
 name: espresso
 description: Java classes for testing Flutter apps using Espresso.
-version: 0.0.1+3
+version: 0.0.1+4
 homepage: https://github.com/flutter/plugins/espresso
 
 environment: