Change binary_encoder/binary_decoder to private temporary

src/binary_enc_dec/binary_decoder.veryl

@@ -2,7 +2,7 @@
 ///
 /// Converts a bit vector from a binary encoding to
 /// a bit vector with a unary encoding.
-pub module binary_decoder #(
+module binary_decoder #(
     /// Width of the input binary vector
     param BIN_WIDTH: u32 = 8,
     /// Width of the output unary vector

src/binary_enc_dec/binary_encoder.veryl

@@ -1,7 +1,7 @@
 /// A binary encoder.
 ///
 /// Transforms a unary encoded value into a binary encoding.
-pub module binary_encoder #(
+module binary_encoder #(
     /// Width of the input unary vector
     param UNARY_WIDTH: u32 = 256,
     /// Width of the output binary vector