Revert "Handle python-dbus not installed"

This reverts commit 25054cdc05.

common/hardware_tici.py

@@ -25,11 +25,7 @@ MM_MODEM_ACCESS_TECHNOLOGY_LTE = 1 << 14
 
 class Tici(HardwareBase):
   def __init__(self):
-    # TODO: remove when dbus is installed everywhere
-    try:
     import dbus  # pylint: disable=import-error
-    except ImportError:
-      return
 
     self.bus = dbus.SystemBus()
     self.nm = self.bus.get_object(NM, '/org/freedesktop/NetworkManager')

selfdrive/loggerd/uploader.py

@@ -69,10 +69,7 @@ def clear_locks(root):
       cloudlog.exception("clear_locks failed")
 
 def is_on_wifi():
-  try:
   return HARDWARE.get_network_type() == NetworkType.wifi
-  except Exception:
-    return False
 
 class Uploader():
   def __init__(self, dongle_id, root):