Remove saving from ctf_pvp_engine

mods/ctf_pvp_engine/ctf_flag/api.lua

@@ -103,7 +103,6 @@ function ctf_flag.add(team, pos)
 
 	pos.team = team
 	table.insert(ctf.team(team).flags,pos)
-	ctf.needs_save = true
 end
 
 function ctf_flag.update(pos)
@@ -135,7 +134,6 @@ function ctf_flag.update(pos)
 
 	if not ctf.team(flag_team_data.team).data.color then
 		ctf.team(flag_team_data.team).data.color = "red"
-		ctf.needs_save = true
 	end
 
 	if flag_team_data.claimed then

mods/ctf_pvp_engine/ctf_flag/flag_func.lua

@@ -79,8 +79,6 @@ local function do_capture(attname, flag, returned)
 			ctf_flag.registered_on_capture[i](attname, flag)
 		end
 	end
-
-	ctf.needs_save = true
 end
 
 local function player_drop_flag(player)
@@ -227,8 +225,6 @@ ctf_flag = {
 				team.spawn = pos
 			end
 
-			ctf.needs_save = true
-
 			local pos2 = {
 				x = pos.x,
 				y = pos.y + 1,
@@ -237,7 +233,6 @@ ctf_flag = {
 
 			if not team.data.color then
 				team.data.color = "red"
-				ctf.needs_save = true
 			end
 
 			minetest.set_node(pos2, {name="ctf_flag:flag_top_"..team.data.color})

mods/ctf_pvp_engine/ctf_flag/init.lua

@@ -141,6 +141,9 @@ local function update_flag_drops()
 				" seconds to capture the flag before it returns.")
 		end
 	end
+
+	ctf_flag.assert_flags()
+
 	minetest.after(5, update_flag_drops)
 end
 minetest.after(5, update_flag_drops)