remove alsa.conf result

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# gst-launch-0.10 filesrc location=/bin/audio_src_48k_le.wav ! wavparse ! audioc
onvert ! alsasink -v --gst-debug=alsa:5
0:00:00.680000000  1006   0x477020 DEBUG                   alsa gstalsasink.c:285:gst_alsasink_init:<GstAl
saSink@0x4786d0> initializing alsasink
0:00:00.700000000  1006   0x477020 DEBUG                   alsa gstalsasink.c:321:gst_alsasink_getcaps:<al
sasink0> device not open, using template caps
0:00:00.710000000  1006   0x477020 DEBUG                   alsa gstalsasink.c:321:gst_alsasink_getcaps:<al
sasink0> device not open, using template caps
Setting pipeline to PAUSED ...
conf.c:snd_config_update_r:3661, configs=/usr/share/alsa/alsa.conf
conf.c:snd_config_update_r:3686, name=/usr/share/alsa/alsa.conf
0:00:00.720000000  1006   0x477020 WARN                    alsa conf.c:3705:snd_config_update_r: alsalib e
rror: Cannot access file /usr/share/alsa/alsa.conf
0:00:00.720000000  1006   0x477020 WARN                    alsa pcm.c:2217:snd_pcm_open_noupdate: alsalib
error: Unknown PCM default
0:00:00.720000000  1006   0x477020 WARN                    alsa gstalsasink.c:747:gst_alsasink_open:<alsas
ink0> Error -2 (No such file or directory) calling snd_pcm_open (&alsa->handle, alsa->device, SND_PCM_STRE
AM_PLAYBACK, SND_PCM_NONBLOCK)
0:00:00.720000000  1006   0x477020 WARN                    alsa gstalsasink.c:764:gst_alsasink_open:<alsas
ink0> error: Could not open audio device for playback.
0:00:00.720000000  1006   0x477020 WARN                    alsa gstalsasink.c:764:gst_alsasink_open:<alsas
ink0> error: Playback open error on device 'default': No such file or directory
ERROR: Pipeline doesn't want to pause.
ERROR: from element /GstPipeline:pipeline0/GstAlsaSink:alsasink0: Could not open audio device for playback
.
Additional debug info:
gstalsasink.c(764): gst_alsasink_open (): /GstPipeline:pipeline0/GstAlsaSink:alsasink0:
Playback open error on device 'default': No such file or directory
Setting pipeline to NULL ...
Freeing pipeline ...
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