pyhon3: Remove extra pycache cleanup

This extra step is not necessary. Specially since we don't remove the
cached files anymore.

BugzID: 80673

bbappends/core/recipes-devtools/python/python3_%.bbappend

@@ -1,9 +1,3 @@
-PACKAGE_PREPROCESS_FUNCS += "${@ 'clean_pycache' if not bb.utils.to_boolean(d.getVar('INCLUDE_PYCS')) else '' }"
-
-clean_pycache(){
-    find ${PKGD} | grep -E "(__pycache__|\.pyc|\.pyo$)" | xargs rm -rf
-}
-
 do_install_append(){
     cd ${D}${libdir}/python${PYTHON_MAJMIN}
     rm -rf turtle.py turtledemo/