Android sample app: update PsiphonTunnel.HostService implementation

MobileLibrary/Android/SampleApps/TunneledWebView/.idea/runConfigurations.xml

@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="RunConfigurationProducerService">
-    <option name="ignoredProducers">
-      <set>
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer" />
-        <option value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer" />
-      </set>
-    </option>
-  </component>
-</project>

MobileLibrary/Android/SampleApps/TunneledWebView/app/src/main/java/ca/psiphon/tunneledwebview/MainActivity.java

@@ -166,26 +166,11 @@ public class MainActivity extends AppCompatActivity
     // NOTE: these are callbacks from the Psiphon Library
     //----------------------------------------------------------------------------------------------
 
-    @Override
-    public String getAppName() {
-        return "TunneledWebView Sample";
-    }
-
     @Override
     public Context getContext() {
         return this;
     }
 
-    @Override
-    public Object getVpnService() {
-        return null;
-    }
-
-    @Override
-    public Object newVpnServiceBuilder() {
-        return null;
-    }
-
     @Override
     public String getPsiphonConfig() {
         try {