Use upstream slack-go/slack again (#1018)

1 files changed, 0 insertions, 30 deletions

diff --git a/vendor/github.com/nlopes/slack/messageID.go b/vendor/github.com/nlopes/slack/messageID.go
deleted file mode 100644
index a17472b4..00000000
--- a/vendor/github.com/nlopes/slack/messageID.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package slack
-
-import "sync"
-
-// IDGenerator provides an interface for generating integer ID values.
-type IDGenerator interface {
-	Next() int
-}
-
-// NewSafeID returns a new instance of an IDGenerator which is safe for
-// concurrent use by multiple goroutines.
-func NewSafeID(startID int) IDGenerator {
-	return &safeID{
-		nextID: startID,
-		mutex:  &sync.Mutex{},
-	}
-}
-
-type safeID struct {
-	nextID int
-	mutex  *sync.Mutex
-}
-
-func (s *safeID) Next() int {
-	s.mutex.Lock()
-	defer s.mutex.Unlock()
-	id := s.nextID
-	s.nextID++
-	return id
-}