Remove flag about TANF non-cash not applying in microsim

These are properly used for SNAP BBCE in microsim.

Example:

Changing California's gross income limit from 200% to 130%: https://policyengine.org/us/policy?focus=gov.hhs.tanf.non_cash.income_limit.gross.CA®ion=us&timePeriod=2024&baseline=2

Raises $52 million: https://policyengine.org/us/policy?focus=policyOutput.policyBreakdown®ion=ca&timePeriod=2024&baseline=2&reform=72142

Start by reviewing the issue's two PolicyEngine policy links and tracing the TANF non-cash income-limit flag in the microsimulation path. Confirm the current flag is unnecessary for SNAP BBCE, remove it, and verify that changing California's gross-income limit produces the expected policy output and $52 million change.

Written by the indexing model from the issue text.