[gnome-control-center] power: Remove get_battery_level()

[Robert Ancell <rancell src gnome org>]

commit af8c3247b46beb6de082c95b2377e3358b94d2d7
Author: Ian Douglas Scott <idscott system76 com>
Date:   Mon Oct 12 10:06:41 2020 -0700

    power: Remove get_battery_level()
    
    This was added in 6c447dc14a2a3a98d25e8a71fb3d5e08ae8b6fe6 to deal with
    both older and newer UPower versions.
    
    It should be safe now to assume a UPower version with this property.

 panels/power/cc-power-panel.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)
---
diff --git a/panels/power/cc-power-panel.c b/panels/power/cc-power-panel.c
index 6398f455e..c7109f277 100644
--- a/panels/power/cc-power-panel.c
+++ b/panels/power/cc-power-panel.c
@@ -383,18 +383,6 @@ kind_to_description (UpDeviceKind kind)
   g_assert_not_reached ();
 }
 
-static UpDeviceLevel
-get_battery_level (UpDevice *device)
-{
-  UpDeviceLevel battery_level;
-
-  if (!g_object_class_find_property (G_OBJECT_CLASS (G_OBJECT_GET_CLASS (device)), "battery-level"))
-    return UP_DEVICE_LEVEL_NONE;
-
-  g_object_get (device, "battery-level", &battery_level, NULL);
-  return battery_level;
-}
-
 static void
 add_device (CcPowerPanel *panel, UpDevice *device)
 {
@@ -419,8 +407,8 @@ add_device (CcPowerPanel *panel, UpDevice *device)
                 "state", &state,
                 "model", &name,
                 "is-present", &is_present,
+                "battery-level", &battery_level,
                 NULL);
-  battery_level = get_battery_level (device);
 
   if (!is_present)
     return;