python3-m2crypto: do not rely on smtpd module

It's not mentioned anywhere in source code, and python 3.12
has removed it.

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-python/recipes-devtools/python/python3-m2crypto_0.40.1.bb

@@ -24,7 +24,6 @@ RDEPENDS:${PN} += "\
   ${PYTHON_PN}-netclient \
   ${PYTHON_PN}-netserver \
   ${PYTHON_PN}-numbers \
-  ${PYTHON_PN}-smtpd \
   ${PYTHON_PN}-xmlrpc \
 "