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-asyncio-throttle_1.0.2.bb

@@ -8,4 +8,6 @@ SRC_URI[sha256sum] = "2675282e99d9129ecc446f917e174bc205c65e36c602aa18603b494856
 
 inherit pypi setuptools3
 
+PYPI_PACKAGE_SDIST = "asyncio-throttle"
+
 RDEPENDS:${PN} += "python3-asyncio"