meta-python: migrate away from setuptool3 where possible

Many recipes are currently building with setuptools3 but can use a more
modern tool: typically setuptools_build_meta but ordered-set can use
flit_core and pyrad can use poetry_core.

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>

meta-python/recipes-devtools/python/python3-flask-socketio_5.1.1.bb

@@ -5,7 +5,7 @@ SECTION = "devel/python"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=38cc21254909604298ce763a6e4440a0"
 
-inherit pypi setuptools3
+inherit pypi setuptools_build_meta
 
 PYPI_PACKAGE = "Flask-SocketIO"