Google Nexus 5 :: Disabled Power Button But It Reboots Phone

I have a Nexus 5 with Android 4.4.4 and CyanogenMod 11. Like always, it had been working really find untill today, when it started to reboot and entered in a loop. I found out that it was because the power button was broken and with the lightest touch, it would activate. Searching through the Internet I found out that many people happen to have this problem. I tried to disable the power button editing a file that is found under /system/usr/keylayout/qpnp_pon.kl, where I had to simply comment the line where the power button was.

Now, if I click the power button it doesn't happen anything, like I was expecting, but after 30 seconds of clicking it, it shuts down and it reboots like if it was an internal error or someting similar that caused that reboot.Is it possible that disabling it the way I did could cause any type of problem that made it reboot after touching it?

I know it's an internal problem or something like this because when I touch it, it doesn't lock the screen or show the power menu, so the button itself is kind of "disabled", but it keeps causing this problem.