chore: remove parameters which are no longer used

prereise/gather/griddata/hifld/const.py

@@ -127,33 +127,6 @@
     "500": 500,
 }
 
-transformer_reactance = {  # per-unit
-    (69, 115): 0.14242,
-    (69, 138): 0.10895,
-    (69, 161): 0.14943,
-    (69, 230): 0.09538,
-    (69, 345): 0.08896,
-    (115, 161): 0.04516,
-    (115, 230): 0.04299,
-    (115, 345): 0.04020,
-    (115, 500): 0.06182,
-    (138, 161): 0.02818,
-    (138, 230): 0.03679,
-    (138, 345): 0.03889,
-    (138, 500): 0.03279,
-    (138, 765): 0.02284,
-    (161, 230): 0.06539,
-    (161, 345): 0.03293,
-    (161, 500): 0.06978,
-    (230, 345): 0.02085,
-    (230, 500): 0.01846,
-    (230, 765): 0.01616,
-    (345, 500): 0.01974,
-    (345, 765): 0.01625,
-    (500, 765): 0.00436,
-}
-transformer_rating = 800  # MVA
-
 eia_storage_gen_types = {
     "Batteries",
     "Flywheels",