#545 rtu gateway type annotation updates

rtu/panel/front_panel.lua

@@ -31,7 +31,7 @@ local UNIT_TYPE_LABELS = { "UNKNOWN", "REDSTONE", "BOILER", "TURBINE", "DYNAMIC
 
 -- create new front panel view
 ---@param panel graphics_element main displaybox
----@param units table unit list
+---@param units rtu_registry_entry[] unit list
 local function init(panel, units)
     local disabled_fg = style.fp.disabled_fg
 
@@ -135,7 +135,7 @@ local function init(panel, units)
 
     -- show hardware statuses
     for i = 1, list_length do
-        local unit = units[i]   ---@type rtu_unit_registry_entry
+        local unit = units[i]
 
         -- hardware status
         local unit_hw = RGBLED{parent=unit_hw_statuses,y=i,label="",colors={colors.red,colors.orange,colors.yellow,colors.green}}