package/python-logbook: drop python2 support

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/python-logbook/Config.in

@@ -1,7 +1,6 @@
 config BR2_PACKAGE_PYTHON_LOGBOOK
 	bool "python-logbook"
-	select BR2_PACKAGE_PYTHON_ZLIB if BR2_PACKAGE_PYTHON
-	select BR2_PACKAGE_PYTHON3_ZLIB if BR2_PACKAGE_PYTHON3
+	select BR2_PACKAGE_PYTHON3_ZLIB
 	help
 	  A logging replacement for Python.