diff --git a/oreilly/go.mod b/oreilly/go.mod
deleted file mode 100644
index 2ab3c8a..0000000
--- a/oreilly/go.mod
+++ /dev/null
@@ -1,3 +0,0 @@
-module main.go
-
-go 1.25.4
diff --git a/oreilly/goroute b/oreilly/goroute
deleted file mode 100755
index e72ee59..0000000
Binary files a/oreilly/goroute and /dev/null differ
diff --git a/oreilly/main.go b/oreilly/main.go
deleted file mode 100644
index 399dadd..0000000
--- a/oreilly/main.go
+++ /dev/null
@@ -1,51 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"strconv"
-	"sync"
-)
-
-func go1(ch chan<- string, wg1 *sync.WaitGroup) {
-	defer wg1.Done()
-	for i := 1; i < 11; i++ {
-		ch <- "go1_" + strconv.Itoa(i)
-	}
-}
-
-func go2(ch chan<- string, wg1 *sync.WaitGroup) {
-	defer wg1.Done()
-	for i := 1; i < 11; i++ {
-		ch <- "go2_" + strconv.Itoa(i)
-	}
-}
-
-func Reader(ch <-chan string, wg *sync.WaitGroup) {
-	defer wg.Done()
-	for {
-		if v, ok := <-ch; !ok {
-			fmt.Println("Channel closed")
-			os.Exit(1)
-		} else {
-			fmt.Println(v)
-		}
-	}
-}
-
-func main() {
-	var wg1 sync.WaitGroup
-	var wg sync.WaitGroup
-	wg.Add(1)
-	wg1.Add(2)
-	ch := make(chan string)
-	go go1(ch, &wg1)
-	go go2(ch, &wg1)
-	go Reader(ch, &wg)
-
-	go func() {
-		wg1.Wait()
-		close(ch)
-	}()
-	wg.Wait()
-}