zenfone7: Remove idc keyboard.specialFunction

It fix the mouse pointer show on lockscreen after boot up

Change-Id: Ia4205d101631498185756de733cca23de35bfc31
diff --git a/idc/fts_ts.idc b/idc/fts_ts.idc
index 3bad60b..2e24611 100644
--- a/idc/fts_ts.idc
+++ b/idc/fts_ts.idc
@@ -1,4 +1,3 @@
 device.internal = 1
-keyboard.specialFunction = 1
 touch.deviceType = touchScreen
 touch.orientationAware = 1