x86/crypto: Remove stray comment terminator

It seems the SPDX patch script managed to confuse itself.

Fixes: 2eb72d6696 ("treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_179.RULE")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/x86/crypto/crc32-pclmul_asm.S

@@ -1,6 +1,4 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
- */
-
 /*
  * Copyright 2012 Xyratex Technology Limited
  *