.github: drop external mouse driver from build

Since it's now in-tree, no need for the external one anymore.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

Author: metux

.github/scripts/compile-drivers.sh

@@ -15,7 +15,6 @@ build_xf86drv_ac    input-evdev             2.11.0.2
 build_xf86drv_ac    input-joystick          1.6.4.2
 build_xf86drv_ac    input-keyboard          2.1.0.2
 build_xf86drv_ac    input-libinput          1.5.1.0
-build_xf86drv_ac    input-mouse             1.9.6
 build_xf86drv_ac    input-synaptics         1.10.0.2
 build_xf86drv_ac    input-vmmouse           13.2.0.4
 build_xf86drv_ac    input-void              1.4.2.3