[REQ] Stopping/disabling/removing 'tap to wake' lockscreen or similar

MTK phone, CM12.1, and doesnt have an option to turn tap to wake off, In gestures or in display, I know it should as google tells me it should, but it doesnt. This is on CM12, or resurrection remix, or crdroid, or pacman rom.... none have the option to turn it off. So in my jeans my phone keeps waking up and doing stuff in my pocket. Tried a pin or a pattern but it ends up opening emergency call and typing hundreds of numbers. All this is wasting battery. So... how can I either get rid of tap to wake lock screen, or completely remove the emergency call button. Gravity box USED to have the option, but doesnt now and some xposed lock screen apps hide the writing for it, but its still there. So am looking for:

disabling tap to wake lockscreen
removing the emergency call option completely.
removing the lockscreen completely.
A new lockscreen with NO notifications, nothing extra (tried zui but hated that slide up settings thing)

any of these fixed is great.

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