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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def remove_backtrack_blocks_from_fold(folded_ir_blocks):
 """Return a list of IR blocks with all Backtrack blocks removed."""

    new_folded_ir_blocks = []
    for block in folded_ir_blocks:
        if not isinstance(block, Backtrack):
            new_folded_ir_blocks.append(block)
    return new_folded_ir_blocks