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-python-dotenv_1.2.1.bb

@@ -15,8 +15,6 @@ PACKAGECONFIG ?= ""
 PACKAGECONFIG:append = "${@bb.utils.contains('PTEST_ENABLED', '1', ' cli', '', d)}"
 PACKAGECONFIG[cli] = ",,,python3-click"
 
-PYPI_PACKAGE = "python_dotenv"
-
 RDEPENDS:${PN}-ptest += "\
     coreutils \
     python3-sh \