buildsystem: remove package name from AndroidManifest.xml

It's deprecated and generates a warning during build.

application/vlc-android/AndroidManifest.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    package="org.videolan.vlc">
+    xmlns:tools="http://schemas.android.com/tools">
 
     <uses-sdk tools:overrideLibrary="com.jraska.livedata.ktx, com.jraska.livedata, tools.fastlane.screengrab, android_libs.ub_uiautomator, androidx.car.app, androidx.annotation.experimental"/>
 

medialibrary/AndroidManifest.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="org.videolan.medialibrary">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application/>