Tidy up code comments · PyThaiNLP/nlpo3@0dc1c85

unreachable pattern

variants `DifferentRanges`, `RepetitionRange`, `AnchorStartLine`, and `AnchorEndLine` are never constructed

function `is_in_range` is never used

method `is_valid_custom_str_bytes` is never used

trait `FixedLengthCustomString` is never used

associated items `is_full_string`, `full_string_bytes_len`, and `convert_raw_bytes_to_utf8_bytes` are never used

associated items `is_full_string` and `convert_raw_bytes_to_utf8_bytes` are never used

Process completed with exit code 1.

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