recipes: update for PYPI_PACKAGE change

The pypi class has slightly changed the semantics of the PYPI_PACKAGE
variable[1], now PYPI_PACKAGE is the normalised package name and the new
variable PYPI_PACKAGE_SDIST is used when the source tarball doesn't match.

Update recipes as appropriate: this is mostly deleting now-redundant
assignments but some assignments are still needed where packages are not
uploaded using the modern standards.

[1] oe-core 98049bf86b6 ("classes/pypi: change PYPI_PACKAGE to be normalised")

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-python/recipes-devtools/python/python3-ipython-genutils_0.2.0.bb

@@ -3,8 +3,6 @@ HOMEPAGE = "https://ipython.org"
 LICENSE = "BSD-3-Clause"
 LIC_FILES_CHKSUM = "file://COPYING.md;md5=f7c3032c3ac398265224533a0a333a35"
 
-PYPI_PACKAGE = "ipython_genutils"
-
 SRC_URI[sha256sum] = "eb2e116e75ecef9d4d228fdc66af54269afa26ab4463042e33785b887c628ba8"
 
 inherit setuptools3 pypi