keep only ID3v2.4 tags, remove ID3v1 and ID3v2.3 tags

[milahu]

i have mp3 files with ID3v1 and ID3v2.3 tags

when i use mutagen to modify the tags
i get files with ID3v1 and ID3v2.3 and ID3v2.4 tags

with updated ID3v1 and ID3v2.4 tags
with the original ID3v2.3 tags

i want to keep only ID3v2.4 tags

$ tageditor --no-color get -f 01.mp3.fixed.mp3 2>&1 | grep -e ID3 -e Title
 - ID3v1 tag
    Title             new title
 - ID3v2 tag (version 2.4.0)
    Title             new title
 - ID3v2 tag (version 2.3.0)
    Title             old title
    Warning      09:36:42   parsing file header: There is more than just one ID3v2 header at the beginning of the file.

with file.save(buf, v2_version=3) i get duplicate ID3v2.3 tags

$ tageditor --no-color get -f 01.mp3.fixed.mp3 2>&1 | grep -e ID3 -e Title
 - ID3v1 tag
    Title             new title
 - ID3v2 tag (version 2.3.0)
    Title             new title
 - ID3v2 tag (version 2.3.0)
    Title             old title
    Warning      09:44:08   parsing file header: There is more than just one ID3v2 header at the beginning of the file.
    Warning      09:44:08   parsing TDRC frame: The frame is only supported in ID3v2.4 and newer but the tag's version is ID3v2.3.

import io
import mutagen

name = "01.mp3"

file = mutagen.File(name)

file.tags.add(mutagen.id3.TIT2(
    text=f"new title",
    encoding=mutagen.id3.Encoding.UTF8
))

buf = io.BytesIO()
with open(name, "rb") as f:
    buf.write(f.read()) # todo chunks

name2 = name + ".fixed.mp3"

#file.save(name2) # error: no such file
file.save(buf)

# write ID3v1 and ID3v2.3 tags
# dont write ID3v2.4 tags for better compatibility
#file.save(buf, v2_version=3)

with open(name2, "wb") as f:
    f.write(buf.getvalue())

print("TODO check", name2)