Remove some nonsensical items from school chemistry labs (CleverRaven…

…#73026)

* Update locations.json

* destroy the petpack's career

data/json/itemgroups/Clothing_Gear/clothing.json

@@ -4079,7 +4079,6 @@
           { "item": "dry_bag", "prob": 25 },
           { "item": "dry_duffelbag", "prob": 25 },
           { "item": "dry_bag_large", "prob": 15 },
-          { "item": "petpack", "prob": 50 },
           { "item": "chestrig", "variant": "flag_chestrig", "prob": 70, "event": "independence_day" }
         ],
         "prob": 30

data/json/itemgroups/Locations_MapExtras/locations.json

@@ -2125,25 +2125,19 @@
       { "item": "stand_ring", "prob": 5 },
       { "item": "stand_ring_clamps", "prob": 5 },
       { "item": "ether", "prob": 5, "charges-min": 100 },
-      { "prob": 5, "group": "iodine_bottle_plastic_pill_supplement_1_10" },
-      { "prob": 5, "group": "prussian_blue_bottle_plastic_pill_supplement_1_10" },
       { "item": "pocket_firstaid", "prob": 2 },
       { "item": "file", "prob": 5 },
       { "item": "textbook_chemistry", "prob": 10 },
       { "item": "adv_chemistry", "prob": 2 },
-      { "item": "decoy_elfa", "prob": 2 },
       { "item": "water_clean", "prob": 90, "charges-min": 1, "container-item": "bottle_plastic", "sealed": false },
       { "item": "salt_water", "prob": 30, "charges-min": 1 },
       { "item": "bleach", "prob": 10, "charges-min": 6 },
       { "item": "ammonia_liquid", "prob": 30, "charges-min": 6 },
       { "item": "chem_washing_soda", "prob": 10 },
       { "item": "chem_baking_soda", "prob": 10 },
       { "item": "chem_calcium_chloride", "prob": 2 },
-      { "item": "mutagen", "prob": 1 },
-      { "item": "purifier", "prob": 1 },
       { "prob": 3, "group": "yeast_bag_plastic_25" },
       { "prob": 1, "group": "yogurt_starter_culture_bag_plastic_4" },
-      { "item": "royal_jelly", "prob": 4 },
       { "item": "superglue", "prob": 30 },
       { "item": "bottle_glass", "prob": 10 },
       { "item": "syringe", "prob": 1 },