Removed POLEARMS weapon category from big number of weapons in spears_and_polearms.json

[Night-Pryanik]

Summary

None

Purpose of change

Looks like there is big misunderstanding about which weapons should be in POLEARMS weapon category. According to the comment

Cataclysm-DDA/data/json/requirements/melee.json

Line 645 in 6805e26

"//": "Any real, top-heavy cutting weapons with a long pole and a blade on the end, designed to swing side-to-side. Think like a sword with a really long handle.",

pikes shouldn't have POLEARMS weapon category, since they are made for stabbing and not for slashing. Thus many weapons in spears_and_polearms.json erroneously have this weapon category, like all types of pikes, spears, and javelins.

• Closes Polearm proficiences are inconsistent #75861.

Describe the solution

Removed POLEARMS weapon category from big number of weapons in spears_and_polearms.json, made all types of pikes have SPEARS category instead of POLEARMS.
Also changed weapon category from FENCING_WEAPONS to SPEARS for sharpened pipe. I think that weapon category was just a mistake, but I might be completely wrong on that.

Describe alternatives you've considered

None.

Testing

None, obvious json change.

Additional context

None.