vendor: update github.com/rjeczalik/notify for go1.10 (#15785)

vendor/github.com/rjeczalik/notify/debug_debug.go

@@ -6,38 +6,4 @@
 
 package notify
 
-import (
-	"fmt"
-	"os"
-	"runtime"
-	"strings"
-)
-
-func dbgprint(v ...interface{}) {
-	fmt.Printf("[D] ")
-	fmt.Print(v...)
-	fmt.Printf("\n\n")
-}
-
-func dbgprintf(format string, v ...interface{}) {
-	fmt.Printf("[D] ")
-	fmt.Printf(format, v...)
-	fmt.Printf("\n\n")
-}
-
-func dbgcallstack(max int) []string {
-	pc, stack := make([]uintptr, max), make([]string, 0, max)
-	runtime.Callers(2, pc)
-	for _, pc := range pc {
-		if f := runtime.FuncForPC(pc); f != nil {
-			fname := f.Name()
-			idx := strings.LastIndex(fname, string(os.PathSeparator))
-			if idx != -1 {
-				stack = append(stack, fname[idx+1:])
-			} else {
-				stack = append(stack, fname)
-			}
-		}
-	}
-	return stack
-}
+var debugTag bool = true