Datetime to formatted Date Implicit Conversion
The query you posted does indeed produce PlanAffectingConvert warnings in SQL Server 2016 SP1 (didn't try on earlier versions).

That's a bug - those convert statements shouldn't be throwing that warning since it doesn't affect cardinality in any way when they're just in the SELECT portion. 

File a bug report for it at http://connect.microsoft.com and include your repro code, and edit your question to include a link to the Connect item so folks can upvote it.