Revert "Event invites: Warn about clients that don't support email attachments"

We can't trigger a toast from a service, revert this for now.

This reverts commit 0cda396d20.

app/src/main/java/com/etesync/syncadapter/utils/EventEmailInvitation.kt

@@ -5,8 +5,6 @@ import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.net.Uri
-import android.view.Gravity
-import android.widget.Toast
 import at.bitfire.ical4android.Event
 import com.etesync.syncadapter.App
 import com.etesync.syncadapter.R
@@ -46,12 +44,6 @@ class EventEmailInvitation constructor(val context: Context, val account: Accoun
         intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
         intent.putExtra(Intent.EXTRA_STREAM, uri)
 
-        if (!emailSupportsAttachments(context)) {
-            val toast = Toast.makeText(context, context.getString(R.string.calendar_attendees_email_no_attachment), Toast.LENGTH_LONG)
-            toast.setGravity(Gravity.CENTER, 0, 0)
-            toast.show()
-        }
-
         return intent
     }
 

app/src/main/res/values/strings.xml

@@ -348,7 +348,6 @@
     <string name="calendar_attendees_send_email_action">Send invitations</string>
     <string name="sync_calendar_attendees_email_subject" formatted="false">Invitation: %s @ %s</string>
     <string name="sync_calendar_attendees_email_content" formatted="false">You have been invited to the following event:\n\n%s\nWhen: %s\nWhere: %s\nAttendees: %s\n\n--\nThis email was created by EteSync.\nSecure, end-to-end encrypted and privacy respecting data sync.</string>
-    <string name="calendar_attendees_email_no_attachment">Your email client does not support file attachments. Please contact its developers to fix it!</string>
 
     <!-- cert4android -->
     <string name="certificate_notification_connection_security">EteSync: Connection security</string>