staging: usbip: userspace: remove libsysfs flag and autoconf check

libsysfs is now completely removed from USB/IP.
Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/usbip/userspace/configure.ac

@@ -44,12 +44,6 @@ AC_FUNC_REALLOC
 AC_CHECK_FUNCS([memset mkdir regcomp socket strchr strerror strstr dnl
 		strtoul])
 
-AC_CHECK_HEADER([sysfs/libsysfs.h],
-		[AC_CHECK_LIB([sysfs], [sysfs_open_directory_list],
-			      [LIBS="$LIBS -lsysfs"],
-			      [AC_MSG_ERROR([Missing sysfs2 library!])])],
-		[AC_MSG_ERROR([Missing /usr/include/sysfs/libsysfs.h])])
-
 AC_CHECK_HEADER([libudev.h],
 		[AC_CHECK_LIB([udev], [udev_new],
 			      [LIBS="$LIBS -ludev"],