Remove redundant talkback readout when rebooting device

Change-Id: I0b3bf7d0d75c4f19c234977be5caa74496c67a94
Fix: 62418304
Test: manual
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 70e9023..ab418c6 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2353,6 +2353,7 @@
         <!-- Triggered when user-selected home app isn't encryption aware -->
         <activity android:name=".FallbackHome"
                   android:excludeFromRecents="true"
+                  android:label=""
                   android:screenOrientation="nosensor"
                   android:theme="@style/FallbackHome">
             <intent-filter android:priority="-1000">