build: upgrade to go 1.17 and dependencies

vendor/golang.org/x/sys/unix/syscall_bsd.go

@@ -527,23 +527,6 @@ func SysctlClockinfo(name string) (*Clockinfo, error) {
 	return &ci, nil
 }
 
-func SysctlTimeval(name string) (*Timeval, error) {
-	mib, err := sysctlmib(name)
-	if err != nil {
-		return nil, err
-	}
-
-	var tv Timeval
-	n := uintptr(unsafe.Sizeof(tv))
-	if err := sysctl(mib, (*byte)(unsafe.Pointer(&tv)), &n, nil, 0); err != nil {
-		return nil, err
-	}
-	if n != unsafe.Sizeof(tv) {
-		return nil, EIO
-	}
-	return &tv, nil
-}
-
 //sys	utimes(path string, timeval *[2]Timeval) (err error)
 
 func Utimes(path string, tv []Timeval) error {