ASoC: ab8500: Remove some leftover from the "Replace GPLv2 boilerplate/reference with SPDX" rules

The "Replace GPLv2 boilerplate/reference with SPDX" has left some empty
"License terms" paragraphs.
Remove them as well.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/28c0833d4a11f8f75f385e5aad93c23721b06c7e.1653724847.git.christophe.jaillet@wanadoo.frSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/ab8500-codec.c

@@ -12,8 +12,6 @@
  *         Mikko Sarmanne <mikko.sarmanne@symbio.com>,
  *         Jarmo K. Kuronen <jarmo.kuronen@symbio.com>,
  *         for ST-Ericsson.
- *
- * License terms:
  */
 
 #include <linux/kernel.h>

sound/soc/codecs/ab8500-codec.h

@@ -11,8 +11,6 @@
  *         Mikko J. Lehto <mikko.lehto@symbio.com>,
  *         Mikko Sarmanne <mikko.sarmanne@symbio.com>,
  *         for ST-Ericsson.
- *
- * License terms:
  */
 
 #ifndef AB8500_CODEC_REGISTERS_H