Remove defunct HAVE_MULTITOUCH compiler warning
Remove defunct HAVE_MULTITOUCH compiler warning

Seems like this was a rebase gone wrong, HAVE_MULTITOUCH was removed in
3430f4af41184752d698dcbf4919469e36b3216c

Signed-off-by: Peter Hutterer <b9c50af7afa7642f6f854434cda9ffe54ece8b85@who-t.net>

mortehu/xf86-input-synaptics,eyko/xf86-input-synaptics,nanderson94/xf86-input-synaptics,sencer/synaptics,felipejfc/xserver-xorg-input-synaptics,jiixyj/xf86-input-synaptics,gdestuynder/xf86-input-synaptics,jiixyj/xf86-input-synaptics,corcoran/xserver-xorg-input-synaptics,felipejfc/xserver-xorg-input-synaptics,eyko/xf86-input-synaptics,Lyude/xf86-input-synaptics,ssaavedra/xf86-input-synaptics,Lyude/xf86-input-synaptics,nanderson94/xf86-input-synaptics,mmonaco/xf86-input-synaptics,ssaavedra/xf86-input-synaptics,RsrchBoy/xserver-xorg-input-synaptics,sencer/synaptics,quadpixels/three-finger-dragging,quadpixels/three-finger-dragging,mmonaco/xf86-input-synaptics,gdestuynder/xf86-input-synaptics,corcoran/xserver-xorg-input-synaptics,mortehu/xf86-input-synaptics,felipejfc/xserver-xorg-input-synaptics,RsrchBoy/xserver-xorg-input-synaptics