Just comment out the buttons in the the source code and make your own build.
I also comment out the volume control on the touchpad too so I don't accidently touch that and set it too high.
The side volume control is enough for me.
File to change is keymap-fuzeplus.c as below.
{ ACTION_WPS_VOLUP, BUTTON_VOL_UP, BUTTON_NONE },
{ ACTION_WPS_VOLUP, BUTTON_VOL_UP|BUTTON_REPEAT, BUTTON_NONE },
//{ ACTION_WPS_VOLUP, BUTTON_UP, BUTTON_NONE },
//{ ACTION_WPS_VOLUP, BUTTON_UP|BUTTON_REPEAT, BUTTON_NONE },
{ ACTION_WPS_VOLDOWN, BUTTON_VOL_DOWN, BUTTON_NONE },
{ ACTION_WPS_VOLDOWN, BUTTON_VOL_DOWN|BUTTON_REPEAT, BUTTON_NONE },
//{ ACTION_WPS_VOLDOWN, BUTTON_DOWN, BUTTON_NONE },
//{ ACTION_WPS_VOLDOWN, BUTTON_DOWN|BUTTON_REPEAT, BUTTON_NONE },
{ ACTION_WPS_MENU, BUTTON_BACK, BUTTON_NONE },
//{ ACTION_WPS_BROWSE, BUTTON_SELECT|BUTTON_REL, BUTTON_SELECT },
//{ ACTION_WPS_PITCHSCREEN, BUTTON_BOTTOMLEFT|BUTTON_REPEAT, BUTTON_BOTTOMLEFT },
//{ ACTION_WPS_QUICKSCREEN, BUTTON_BOTTOMLEFT|BUTTON_REL, BUTTON_BOTTOMLEFT },
//{ ACTION_WPS_ID3SCREEN, BUTTON_BOTTOMRIGHT|BUTTON_REPEAT, BUTTON_BOTTOMRIGHT },
These changes make the touchpad far more manageable for me.