yeah. when I send a msg I would get a bubble saying it was sent and then I would get another saying it was delivered successfully. now all I get is the one saying it was sent.

[EDIT]

Ok, so over at PPCgeeks they had this and I was able to understand it a bit better and get everything setup correctly. I now no longer get the 'sent msg' bubble. So in the end it was all not fully understanding what I was reading and end-user errors. I'll post what they had over here although once you read them both, they seem to be the same. It is just that I understood this one better.

Disable the SMS Sent notification
If you're tired of the "Message Sent" notification after sending an SMS/text message, you can disable them:
HKLM\Software\Microsoft\Inbox\Settings\SMSNoSentMsg = 1 (DWORD decimal)
And to re-enable:
HKLM\Software\Microsoft\Inbox\Settings\SMSNoSentMsg = 0 (DWORD decimal)

Please note that the 'Settings' key may not exist in your device, and thus may have to be created first.