Merge #7475: Remove references to '.transform' from transform codec docstrings.

Lib/encodings/base64_codec.py

 """Python 'base64_codec' Codec - base64 content transfer encoding.
 
-This codec de/encodes from bytes to bytes and is therefore usable with
-bytes.transform() and bytes.untransform().
+This codec de/encodes from bytes to bytes.
 
 Written by Marc-Andre Lemburg (mal@lemburg.com).
 """

Lib/encodings/hex_codec.py

 """Python 'hex_codec' Codec - 2-digit hex content transfer encoding.
 
-This codec de/encodes from bytes to bytes and is therefore usable with
-bytes.transform() and bytes.untransform().
+This codec de/encodes from bytes to bytes.
 
 Written by Marc-Andre Lemburg (mal@lemburg.com).
 """

Lib/encodings/quopri_codec.py

 """Codec for quoted-printable encoding.
 
-This codec de/encodes from bytes to bytes and is therefore usable with
-bytes.transform() and bytes.untransform().
+This codec de/encodes from bytes to bytes.
 """
 
 import codecs

Lib/encodings/rot_13.py

 #!/usr/bin/env python
 """ Python Character Mapping Codec for ROT13.
 
-This codec de/encodes from str to str and is therefore usable with
-str.transform() and str.untransform().
+This codec de/encodes from str to str.
 
 Written by Marc-Andre Lemburg (mal@lemburg.com).
 """

Lib/encodings/uu_codec.py

 """Python 'uu_codec' Codec - UU content transfer encoding.
 
-This codec de/encodes from bytes to bytes and is therefore usable with
-bytes.transform() and bytes.untransform().
+This codec de/encodes from bytes to bytes.
 
 Written by Marc-Andre Lemburg (mal@lemburg.com). Some details were
 adapted from uu.py which was written by Lance Ellinghouse and

Lib/encodings/zlib_codec.py

 """Python 'zlib_codec' Codec - zlib compression encoding.
 
-This codec de/encodes from bytes to bytes and is therefore usable with
-bytes.transform() and bytes.untransform().
+This codec de/encodes from bytes to bytes.
 
 Written by Marc-Andre Lemburg (mal@lemburg.com).
 """