package/python-aenum: fix pyc compilation error

_py2.py uses syntax not compatible with Python3. Remove _py2.py
to avoid the following compilation error:

error:   File "/usr/lib/python3.10/site-packages/aenum/_py2.py", line 5
    raise exc, None, tb
             ^
SyntaxError: invalid syntax

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/python-aenum/python-aenum.mk

@@ -11,4 +11,12 @@ PYTHON_AENUM_SETUP_TYPE = setuptools
 PYTHON_AENUM_LICENSE = BSD-3-Clause
 PYTHON_AENUM_LICENSE_FILES = aenum/LICENSE
 
+# _py2.py uses syntax not compatible with Python3.
+# Remove _py2.py to avoid compilation error.
+define PYTHON_AENUM_REMOVE_PY2_PY
+	rm $(@D)/aenum/_py2.py
+endef
+
+PYTHON_AENUM_POST_EXTRACT_HOOKS = PYTHON_AENUM_REMOVE_PY2_PY
+
 $(eval $(python-package))