Update vendor dependencies

Signed-off-by: Emile Vauge <emile@vauge.com>

vendor/github.com/opencontainers/runc/libcontainer/system/sysconfig.go

@@ -1,31 +0,0 @@
-// +build cgo,linux cgo,freebsd
-
-package system
-
-/*
-#include <unistd.h>
-#include <limits.h>
-
-int GetLongBit() {
-#ifdef _SC_LONG_BIT
-    int longbits;
-
-    longbits = sysconf(_SC_LONG_BIT);
-    if (longbits <  0) {
-        longbits = (CHAR_BIT * sizeof(long));
-    }
-    return longbits;
-#else
-    return (CHAR_BIT * sizeof(long));
-#endif
-}
-*/
-import "C"
-
-func GetClockTicks() int {
-	return int(C.sysconf(C._SC_CLK_TCK))
-}
-
-func GetLongBit() int {
-	return int(C.GetLongBit())
-}