Also edit /etc/network/interfaces and remove the wpa-conf line for wlan1.
However, on a default Raspbian Lite install (September 2017), my /etc/network/interfaces contains:
# interfaces(5) file used by ifup(8) and ifdown(8)
# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'
# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d
The README mentions the following:
However, on a default Raspbian Lite install (September 2017), my /etc/network/interfaces contains:
Is the wpa-conf line still there by default?