Remove Android Auto manifest entry to get past the reviewers

(There are reviewers now?)

Related #6124
// FREEBIE

AndroidManifest.xml

@@ -108,8 +108,8 @@
     <meta-data android:name="org.thoughtcrime.securesms.mms.TextSecureGlideModule"
                android:value="GlideModule" />
 
-    <meta-data android:name="com.google.android.gms.car.application"
-               android:resource="@xml/automotive_app_desc" />
+    <!--<meta-data android:name="com.google.android.gms.car.application"-->
+               <!--android:resource="@xml/automotive_app_desc" />-->
 
     <activity android:name="org.thoughtcrime.redphone.RedPhone"
               android:excludeFromRecents="true"