selfdrived: remove redundant sound card check (#33767)

rm

system/hardware/base.py

@@ -41,10 +41,6 @@ class HardwareBase(ABC):
   def get_device_type(self):
     pass
 
-  @abstractmethod
-  def get_sound_card_online(self):
-    pass
-
   @abstractmethod
   def get_imei(self, slot) -> str:
     pass

system/hardware/pc/hardware.py

@@ -14,9 +14,6 @@ class Pc(HardwareBase):
   def get_device_type(self):
     return "pc"
 
-  def get_sound_card_online(self):
-    return True
-
   def reboot(self, reason=None):
     print("REBOOT!")
 

system/hardware/tici/hardware.py

@@ -123,12 +123,6 @@ class Tici(HardwareBase):
   def get_device_type(self):
     return get_device_type()
 
-  def get_sound_card_online(self):
-    if os.path.isfile('/proc/asound/card0/state'):
-      with open('/proc/asound/card0/state') as f:
-        return f.read().strip() == 'ONLINE'
-    return False
-
   def reboot(self, reason=None):
     subprocess.check_output(["sudo", "reboot"])