MM-10412: Adds deleteBy prop to posts. (#8896)

api4/post.go

@@ -264,7 +264,7 @@ func deletePost(c *Context, w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	if _, err := c.App.DeletePost(c.Params.PostId); err != nil {
+	if _, err := c.App.DeletePost(c.Params.PostId, c.Session.UserId); err != nil {
 		c.Err = err
 		return
 	}