Deprecate location samples (#339)

* Deprecate location samples

New samples are in platform-samples

* Add warning in sub-projects

Author: marcelpinto

ActivityRecognition/README.md

@@ -1,3 +1,9 @@
+> **Warning**
+> This sample has been deprecated and is no longer being maintained.
+> 
+> Find the new location samples in the new [platform-samples repo](https://github.com/android/platform-samples/tree/main/samples/location).
+
+
 Recognizing the User's Current Activity
 =======================================
 

Geofencing/README.md

@@ -1,3 +1,9 @@
+> **Warning**
+> This sample has been deprecated and is no longer being maintained.
+> 
+> Find the new location samples in the new [platform-samples repo](https://github.com/android/platform-samples/tree/main/samples/location).
+
+
 Creating and Monitoring Geofences
 =================================
 

LocationUpdatesBackgroundKotlin/README.md

@@ -1,3 +1,9 @@
+> **Warning**
+> This sample has been deprecated and is no longer being maintained.
+> 
+> Find the new location samples in the new [platform-samples repo](https://github.com/android/platform-samples/tree/main/samples/location).
+
+
 Location Updates in the Background (Kotlin)
 ===========================================
 Demonstrates retrieving location updates in the background.

README.md

@@ -1,4 +1,10 @@
-Google Play Location & Context Samples
+> **Warning**
+> This sample has been deprecated and is no longer being maintained.
+> 
+> Find the new location samples in the new [platform-samples repo](https://github.com/android/platform-samples/tree/main/samples/location).
+
+
+~~Google Play Location & Context Samples~~
 ======================================
 
 The [location and context APIs](https://developers.google.com/location-context/) harness the sensors and signals of mobile devices to provide awareness of user actions and their environment, enabling delightful and engaging experiences that simplify user interactions, provide assistance, and help users to better understand themselves.
@@ -49,4 +55,4 @@ License
 -------
 
 These samples are distributed under the terms of the Apache License (Version 2.0).
-See the [license](LICENSE) for more information.
+See the [license](LICENSE) for more information.