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/pyrtm_0.4.2.bb

@@ -20,9 +20,9 @@ FILES:${PN}-tests += " \
 "
 
 RDEPENDS:${PN} += "\
-    ${PYTHON_PN}-json \
-    ${PYTHON_PN}-logging \
-    ${PYTHON_PN}-netclient \
+    python3-json \
+    python3-logging \
+    python3-netclient \
 "
 
 RDEPENDS:${PN}-samples += " \
@@ -31,5 +31,5 @@ RDEPENDS:${PN}-samples += " \
 
 RDEPENDS:${PN}-tests += " \
     ${PN} \
-    ${PYTHON_PN}-unittest \
+    python3-unittest \
 "