fix battery widget

remove extra branch that broke acpi output with 'rate informration unavailable'
same fix as 95cc9b94 (#108) for batteryarc widget

battery-widget/battery.lua

@@ -115,10 +115,8 @@ local function worker(args)
         local battery_info = {}
         local capacities = {}
         for s in stdout:gmatch("[^\r\n]+") do
-            local status, charge_str, time = string.match(s, '.+: (%a+), (%d?%d?%d)%%,?.*')
-            if string.match(s, 'rate information') then
-                -- ignore such line
-            elseif status ~= nil then
+            local status, charge_str, time = string.match(s, '.+: (%a+), (%d?%d?%d)%%,?(.*)')
+            if status ~= nil then
                 table.insert(battery_info, {status = status, charge = tonumber(charge_str)})
             else
                 local cap_str = string.match(s, '.+:.+last full capacity (%d+)')