Remove redundant check

Signed-off-by: Jay Gu <jagu@nvidia.com>

Author: haijieg

src/cuda/tile/_ir/ops_utils.py

@@ -171,7 +171,7 @@ def check_rd_and_ftz(fn: str, rounding_mode: Optional[RoundingMode], flush_to_ze
                     f'Rounding mode {rounding_mode.value} can only be used for float32 type, '
                     f'but got {dtype}')
     if flush_to_zero:
-        if flush_to_zero and not math_op_def.support_flush_to_zero:
+        if not math_op_def.support_flush_to_zero:
             raise TileTypeError(f'Flush to zero is not supported for {fn}')
         if dtype != datatype.float32:
             raise TileTypeError(