m4.include/gnulib/fsusage.m4: produce more regular configure output.

Sync with gnulib 875dff5812cb9de949727e1aa399a06b07a886a9.

Remove AC_MSG_CHECKING without corresponding AC_MSG_RESULT.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

m4.include/gnulib/fsusage.m4

@@ -1,7 +1,7 @@
-# serial 34
+# serial 35
 # Obtaining file system usage information.
 
-# Copyright (C) 1997-1998, 2000-2001, 2003-2017 Free Software Foundation, Inc.
+# Copyright (C) 1997-1998, 2000-2001, 2003-2020 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -36,7 +36,6 @@ AC_DEFUN([gl_FILE_SYSTEM_USAGE],
   dnl Mac OS X >= 10.5 (32-bit mode).
   AC_REQUIRE([AC_SYS_LARGEFILE])
 
-  AC_MSG_CHECKING([how to get file system space usage])
   ac_fsusage_space=no
 
   # Perform only the link test since it seems there are no variants of the