Revert "eglfs: Disable eglfs when evdev is not present"

evdev support in eglfs is now guarded by QT_NO_EVDEV, so this
check is no longer required. This allows eglfs + tslib to be
a supported combination.

This reverts commit a95e396a83.

Change-Id: Icf7c15121b7eca1131d412b05b956cd5d7f189ae
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

configure

@@ -5278,7 +5278,7 @@ elif [ "$CFG_OPENGL" = "desktop" ]; then
 fi
 
 if [ "$CFG_EGLFS" != "no" ]; then
-    if [ "$CFG_OPENGL" = "es2" ] && [ "$CFG_EVDEV" = "yes" ]; then
+    if [ "$CFG_OPENGL" = "es2" ] && [ "$XPLATFORM_QNX" = "no" ]; then
         CFG_EGLFS="$CFG_EGL"
     else
         CFG_EGLFS="no"