diff --git a/server/public/model/slack_compatibility.go b/server/public/model/slack_compatibility.go
index 020dc5fc0e2..e5a464d2cfe 100644
--- a/server/public/model/slack_compatibility.go
+++ b/server/public/model/slack_compatibility.go
@@ -8,22 +8,6 @@ import (
 	"strings"
 )
 
-// Deprecated: Use MessageAttachment instead.
-type SlackAttachment = MessageAttachment
-
-// Deprecated: Use MessageAttachmentField instead.
-type SlackAttachmentField = MessageAttachmentField
-
-// Deprecated: Use ParseMessageAttachment instead.
-func ParseSlackAttachment(post *Post, attachments []*MessageAttachment) {
-	ParseMessageAttachment(post, attachments)
-}
-
-// Deprecated: Use StringifyMessageAttachmentFieldValue instead.
-func StringifySlackFieldValue(a []*MessageAttachment) []*MessageAttachment {
-	return StringifyMessageAttachmentFieldValue(a)
-}
-
 // SlackCompatibleBool is an alias for bool that implements json.Unmarshaler
 type SlackCompatibleBool bool