package/python-esptool: drop python2 support

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

package/python-esptool/Config.in

@@ -3,8 +3,7 @@ config BR2_PACKAGE_PYTHON_ESPTOOL
 	select BR2_PACKAGE_PYTHON_ECDSA # runtime
 	select BR2_PACKAGE_PYTHON_PYAES # runtime
 	select BR2_PACKAGE_PYTHON_SERIAL # runtime
-	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 serial utility to communicate & flash code to Espressif
 	  ESP8266 & ESP32 chips.