fix: remove go linkname (#406)

noescape.go

@@ -4,6 +4,18 @@ import (
 	"unsafe"
 )
 
-//go:linkname noescape runtime.noescape
-//go:noescape
-func noescape(p unsafe.Pointer) unsafe.Pointer
+// noescape hides a pointer from escape analysis.  noescape is
+// the identity function but escape analysis doesn't think the
+// output depends on the input.  noescape is inlined and currently
+// compiles down to zero instructions.
+// USE CAREFULLY!
+//
+// This function is taken from Go std lib:
+// https://github.com/golang/go/blob/master/src/runtime/stubs.go#L178
+//
+//nolint:govet,staticcheck
+//go:nosplit
+func noescape(p unsafe.Pointer) unsafe.Pointer {
+	x := uintptr(p)
+	return unsafe.Pointer(x ^ 0)
+}