fix: Delete read_raw_bytes (#104)

This function is not used.

Closes #94.

src/kio/serial/readers.py

@@ -119,13 +119,6 @@ def read_compact_string_nullable(buffer: IO[bytes]) -> str | None:
     return bytes_value.decode()
 
 
-def read_raw_bytes(buffer: IO[bytes]) -> bytes | None:
-    length = read_int32(buffer)
-    if length == 0:
-        return None
-    return buffer.read(length - 1)
-
-
 def read_legacy_bytes(buffer: IO[bytes]) -> bytes:
     length = read_int32(buffer)
     if length == -1:

tests/serial/test_readers.py

@@ -21,7 +21,6 @@
 from kio.serial.readers import read_legacy_string
 from kio.serial.readers import read_nullable_legacy_bytes
 from kio.serial.readers import read_nullable_legacy_string
-from kio.serial.readers import read_raw_bytes
 from kio.serial.readers import read_uint8
 from kio.serial.readers import read_uint16
 from kio.serial.readers import read_uint32
@@ -272,27 +271,6 @@ def test_can_read_string_sync(
         assert value == read_compact_string_nullable(buffer)
 
 
-class TestReadRawBytes:
-    def test_returns_null_for_negative_length_sync(
-        self,
-        buffer: io.BytesIO,
-    ) -> None:
-        buffer.write((0).to_bytes(4, "big"))
-        buffer.seek(0)
-        assert read_raw_bytes(buffer) is None
-
-    def test_can_read_bytes_sync(
-        self,
-        buffer: io.BytesIO,
-    ) -> None:
-        value = b"k\x9bC\x94\xbe\x1fV\xd6"
-        byte_length = len(value) + 1  # string length is offset by one
-        buffer.write(struct.pack(">i", byte_length))
-        buffer.write(value)
-        buffer.seek(0)
-        assert value == read_raw_bytes(buffer)
-
-
 class TestReadNullableLegacyBytes:
     def test_returns_none_for_negative_length_sync(
         self,