feat(balance): toolboxes are not mechanical (#4512)

* Toolbox No Mechanics

The toolbox no longer needs mechanics to build, since it is literally just storing a bunch of tools inside of a metal box held together with nails and wire. It now instead requires a level 2 hammering tool.

* No hammering

The hammer is already a tool in the recipe, no need to require another one.

data/json/recipes/other/tools.json

@@ -1759,7 +1759,6 @@
     "category": "CC_OTHER",
     "subcategory": "CSC_OTHER_TOOLS",
     "skill_used": "fabrication",
-    "skills_required": [ "mechanics", 3 ],
     "difficulty": 2,
     "time": "4 m",
     "reversible": true,
@@ -1782,7 +1781,6 @@
     "category": "CC_OTHER",
     "subcategory": "CSC_OTHER_TOOLS",
     "skill_used": "fabrication",
-    "skills_required": [ "mechanics", 3 ],
     "difficulty": 2,
     "time": "4 m",
     "reversible": true,