diff --git a/concurrency/generators.go b/concurrency/generators.go
deleted file mode 100644
index 5b2b8b2..0000000
--- a/concurrency/generators.go
+++ /dev/null
@@ -1,43 +0,0 @@
-package main
-
-import (
-	"fmt"
-)
-
-//FibonacciClosure implements fibonacci number generation using closure
-func FibonacciClosure() func() int {
-	a, b := 0, 1
-	return func() int {
-		a, b = b, a+b
-		return a
-	}
-}
-
-//FibonacciChan implements fibonacci number generation using channel
-func FibonacciChan(n int) chan int {
-	c := make(chan int)
-
-	go func() {
-		a, b := 0, 1
-		for i := 0; i < n; i++ {
-			c <- b
-			a, b = b, a+b
-		}
-		close(c)
-	}()
-
-	return c
-}
-
-func main() {
-	//closure
-	nextFib := FibonacciClosure()
-	for i := 0; i < 20; i++ {
-		fmt.Println(nextFib())
-	}
-
-	//channel
-	for i := range FibonacciChan(20) {
-		fmt.Println(i)
-	}
-}