remove(binance): delete the stale Binance Chain SignTx test, unblocking python-integration-tests

Firmware deleted the Binance Chain (Beacon Chain, a dead chain) signing
path in keepkey-firmware@45cbc13dc -- all fsm.c handlers and every
messagemap.def MSG_IN/MSG_OUT registration for
BinanceGetAddress/SignTx/TransferMsg. This test suite never actually ran
in CI until now (keepkey-firmware's secret-scan was silently skipping the
entire build/test graph on every PR -- see keepkey-firmware#583), so
nobody caught that the corresponding test file was never removed to
match.

test_msg_binance_sign_tx.py's two tests (test_transfer, test_transfer_bep2)
send BinanceSignTx against a firmware build that no longer registers a
handler for it and correctly refuse with Failure_UnexpectedMessage instead
of a signed response -- a real, expected consequence of the removal, not a
signing regression.

Also drops the SECTIONS report's stale J11 entry, which reused this test
as its evidence for a generic 'long denom renders in full' formatting
claim -- unrelated to Binance specifically, but its only vehicle no longer
exists. The existing 'Tests remain in python-keepkey but excluded from
report' comment above the O section shows this cleanup was already done
once for the dedicated Binance section; this entry was the one cross-
reference that cleanup missed.

Author: BitHighlander

scripts/generate-test-report.py

@@ -564,10 +564,6 @@ def _arg_shown(a):
           'domain name. The feature is withdrawn rather than shipped with a screen it could not '
           'vouch for: zero screens, refusal on the wire.',
           []),
-         ('J11', 'test_msg_binance_sign_tx', 'test_transfer',
-          'Binance denom renders in full',
-          'A long denom must render completely and must not overflow the formatting buffer.',
-          ['Transfer screen showing the full denom']),
          ('J12', 'test_msg_ping', 'test_ping_long_body_is_paged',
           'A long body is paged, not clipped',
           'A body that will not fit one screen is shown across several, with the page number '