Use tin from MTG instead of `moreores` (#401)

Vitaliy

2018-07-21 d1b54a573c6287ea1d63b9c3f979c39058b1331a

 technic/tools/mining_drill.lua

@@ -6,7 +6,7 @@
minetest.register_craft({
   output = 'technic:mining_drill',
   recipe = {
      {'moreores:tin_ingot',            'technic:diamond_drill_head', 'moreores:tin_ingot'},
      {'default:tin_ingot',             'technic:diamond_drill_head', 'default:tin_ingot'},
      {'technic:stainless_steel_ingot', 'technic:motor',              'technic:stainless_steel_ingot'},
      {'',                              'technic:red_energy_crystal', 'default:copper_ingot'},
   }