Removes unused reagent_state var from reagents (#88616)

## About The Pull Request
As it says on the tin.

No where in code was this var read or used in any way, it was only
assigned a value & then forgotten so it counts as unused

## Changelog
🆑
code: removes unused var from reagent code
/🆑

code/modules/mining/lavaland/tendril_loot.dm

@@ -534,7 +534,6 @@
 /datum/reagent/flightpotion
 	name = "Flight Potion"
 	description = "Strange mutagenic compound of unknown origins."
-	reagent_state = LIQUID
 	color = "#976230"
 
 /datum/reagent/flightpotion/expose_mob(mob/living/exposed_mob, methods=TOUCH, reac_volume, show_message = TRUE)