ALSA: pci/hda: Remove unused, broken, header file

sound/pci/hda/local.h seems to be an earlier version of
sound/hda/local.h; it was added at the same time but doesn't seem to
have ever been used (within the git history).  Most of its macros
depend on a hdac_read_parm() function which is not defined anywhere.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/local.h

-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- */
-
-#ifndef __HDAC_LOCAL_H
-#define __HDAC_LOCAL_H
-
-int hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm);
-
-#define get_wcaps(codec, nid) \
-	hdac_read_parm(codec, nid, AC_PAR_AUDIO_WIDGET_CAP)
-/* get the widget type from widget capability bits */
-static inline int get_wcaps_type(unsigned int wcaps)
-{
-	if (!wcaps)
-		return -1; /* invalid type */
-	return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
-}
-
-#define get_pin_caps(codec, nid) \
-	hdac_read_parm(codec, nid, AC_PAR_PIN_CAP)
-
-static inline
-unsigned int get_pin_cfg(struct hdac_device *codec, hda_nid_t nid)
-{
-	unsigned int val;
-
-	if (snd_hdac_read(codec, nid, AC_VERB_GET_CONFIG_DEFAULT, 0, &val))
-		return -1;
-	return val;
-}
-
-#define get_amp_caps(codec, nid, dir) \
-	hdac_read_parm(codec, nid, (dir) == HDA_OUTPUT ? \
-		       AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP)
-
-#define get_power_caps(codec, nid) \
-	hdac_read_parm(codec, nid, AC_PAR_POWER_STATE)
-
-#endif /* __HDAC_LOCAL_H */