fix(sp21): remove orphan _ITER_UNBOUNDED from ui.py (now in claim_detail.py)

backend/src/cyclone/store/ui.py

@@ -532,15 +532,6 @@ def _date_in_bounds(
     return True
 
 
-# Effectively-unbounded iter_* limit, used by count_claims /
-# count_remittances so they can reuse the iter's filter pipeline
-# (incl. the in-memory ``payer`` substring + ``date_from/to`` checks)
-# without being silently capped at the iter's default ``limit=100``.
-# 2**31 - 1 is the largest signed 32-bit int — far above any realistic
-# X12 batch population.
-_ITER_UNBOUNDED = 2**31 - 1
-
-
 # ---------------------------------------------------------------------------
 # SP9: ORM-to-Pydantic conversion helpers
 # ---------------------------------------------------------------------------