cleanup: PYTHON2 and PYTHON3 are always defined

9a8e477f76971b1ea26f990386186cebd289796b

build/conf/python.conf

@@ -938,8 +938,6 @@ macro NO_CYTHON_COVERAGE() {
 ### Documentation: https://wiki.yandex-team.ru/arcadia/python/pysrcs/#modulipylibrarypy3libraryimakrospysrcs
 macro PY_SRCS() {
     DEFAULT(MODULE_TAG PY2)
-    DEFAULT(PYTHON2 yes)
-    DEFAULT(PYTHON3 no)
 }
 
 # tag:python-specific