xf86-input-libinput: Changes to 'master'

[Peter Hutterer]

 configure.ac                  |   10 -
 include/libinput-properties.h |    8 -
 man/libinput.man              |   53 ---------
 src/xf86libinput.c            |  227 ------------------------------------------
 4 files changed, 7 insertions(+), 291 deletions(-)

New commits:
commit 20bb8d6b9f4375557472dad67b5f8dcf31be27d3
Author: Peter Hutterer <peter.hutterer at who-t.net>
Date:   Wed May 23 08:14:23 2018 +1000

    Revert "Implement the custom acceleration curve options"
    
    Custom pointer acceleration curves were reverted in libinput, so no point
    having this code here.
    
    This reverts commit d84e0035d12a9655c09a6e8c619b1144be42c90c.
    
    Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>