Revert "fix: string deleted but still used"

This reverts commit bcb3e9a1.

Change-Id: I3f36a568a083c90923ff94732a93a27eda7ae71f

jami-android/app/src/main/res/layout/frag_settings.xml

@@ -572,7 +572,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
                     <TextView
                         style="@style/ListSecondary"
                         android:layout_width="match_parent"
-                        android:layout_height="wrap_content" />
+                        android:layout_height="wrap_content"
+                        android:text="@string/pref_pushNotif_summary" />
 
                 </LinearLayout>