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-async-timeout_4.0.3.bb

@@ -12,6 +12,8 @@ SRC_URI[sha256sum] = "4640d96be84d82d02ed59ea2b7105a0f7b33abe8703703cd0ab0bf87c4
 
 inherit pypi python_setuptools_build_meta
 
+PYPI_PACKAGE_SDIST = "async-timeout"
+
 DEPENDS += "python3-wheel-native"
 
 RDEPENDS:${PN} = "\