Remove deprecated code

Author: jhabr

android-example-app/app-kotlin/src/main/java/ch/freshbits/pathshare/example/MainActivity.kt

@@ -248,6 +248,6 @@ class MainActivity : AppCompatActivity() {
     }
 
     private fun preferences(): SharedPreferences {
-        return applicationContext.getSharedPreferences(SESSION_PREFERENCES, Context.MODE_MULTI_PROCESS)
+        return applicationContext.getSharedPreferences(SESSION_PREFERENCES, MODE_PRIVATE)
     }
 }

android-example-app/app/src/main/java/ch/freshbits/pathshare/example/MainActivity.java

@@ -335,6 +335,6 @@ private void showToast(String message) {
     }
 
     private SharedPreferences getPreferences() {
-        return getApplicationContext().getSharedPreferences(SESSION_PREFERENCES, Context.MODE_MULTI_PROCESS);
+        return getApplicationContext().getSharedPreferences(SESSION_PREFERENCES, Context.MODE_PRIVATE);
     }
 }