Remove WebViewFactory.getWebViewPackageName() system API.

Bug: 27719581
Change-Id: Ic129cd711daf088bec6ee2c1b9ae757b2d5c78d6
diff --git a/system-api/24.txt b/system-api/24.txt
index c819b9d..eac36a6 100644
--- a/system-api/24.txt
+++ b/system-api/24.txt
@@ -41414,7 +41414,6 @@
   public final class WebViewFactory {
     ctor public WebViewFactory();
     method public static android.content.pm.PackageInfo getLoadedPackageInfo();
-    method public static java.lang.String getWebViewPackageName();
     method public static int loadWebViewNativeLibraryFromPackage(java.lang.String, java.lang.ClassLoader);
     method public static void prepareWebViewInZygote();
     field public static final java.lang.String CHROMIUM_WEBVIEW_VMSIZE_SIZE_PROPERTY = "persist.sys.webview.vmsize";