fix cutoff a grid peak shaving register

backend/tests/test_drop_registers_matching_last_verified.py

@@ -20,27 +20,3 @@ def test_drop_registers_keeps_reg178_when_mask_differs():
     assert out == registers
     assert skipped == []
 
-
-def test_drop_registers_keeps_reg179_when_mask_matches_but_not_clean():
-    registers = [(179, "control_board_special_1", 2)]  # want cutoff ON (clean value)
-    last_verified = {179: 0x1236}  # bits0–1 still == 2, but not a clean 2/3 value
-    out, skipped = _drop_registers_matching_last_verified(registers, last_verified)
-    assert out == registers
-    assert skipped == []
-
-
-def test_drop_registers_skips_reg179_when_clean_value_matches():
-    registers = [(179, "control_board_special_1", 2)]  # want cutoff ON (clean value)
-    last_verified = {179: 2}  # already clean cutoff ON
-    out, skipped = _drop_registers_matching_last_verified(registers, last_verified)
-    assert out == []
-    assert skipped == [179]
-
-
-def test_drop_registers_keeps_reg179_when_mask_differs():
-    registers = [(179, "control_board_special_1", 2)]  # want cutoff ON
-    last_verified = {179: 0x1237}  # ...0111b => bits0–1 == 3 (cutoff OFF)
-    out, skipped = _drop_registers_matching_last_verified(registers, last_verified)
-    assert out == registers
-    assert skipped == []
-