meta-python: drop ${PYTHON_PN}

python 2 is long unsupported, so we no longer need this variable.

Signed-off-by: Tim Orling <tim.orling@konsulko.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-python/recipes-devtools/python/python3-passlib_1.7.4.bb

@@ -15,7 +15,7 @@ SRC_URI[sha256sum] = "defd50f72b65c5402ab2c573830a6978e5f202ad0d984793c8dde2c415
 inherit pypi setuptools3
 
 RDEPENDS:${PN} += "\
-    ${PYTHON_PN}-crypt \
-    ${PYTHON_PN}-logging \
-    ${PYTHON_PN}-netclient \
+    python3-crypt \
+    python3-logging \
+    python3-netclient \
 "