Remove profile picture borders

SignalUtilitiesKit/Profile Pictures/ProfilePictureView.swift

@@ -139,8 +139,6 @@ public final class ProfilePictureView : UIView {
         let result = UIImageView()
         result.layer.masksToBounds = true
         result.backgroundColor = Colors.unimportant
-        result.layer.borderColor = Colors.text.withAlphaComponent(0.35).cgColor
-        result.layer.borderWidth = 1
         result.contentMode = .scaleAspectFit
         return result
     }