Identify your swap devices
cat /proc/swaps
Disable swap for the current boot time (swap will re-enable on reboot if you stop here)
swapoff -a
Mask the systemd swap service that activates your swap device
systemctl mask dev-sda2.swap
Remove swap devices from fstab
(just comment out)
#UUID=c3ccacb8-0eba-490a-8202-78dc7f341695 none swap sw 0 0
Reboot.