backend/libinput: require libinput 1.14

We have the policy of requiring up-to-date dependencies instead of
adding conditionals for older versions. libinput 1.14 was published more
than 1 year ago.

backend/libinput/tablet_tool.c

@@ -113,10 +113,8 @@ static enum wlr_tablet_tool_type wlr_type_from_libinput_type(
 		return WLR_TABLET_TOOL_TYPE_MOUSE;
 	case LIBINPUT_TABLET_TOOL_TYPE_LENS:
 		return WLR_TABLET_TOOL_TYPE_LENS;
-#if LIBINPUT_MINOR >= 14
 	case LIBINPUT_TABLET_TOOL_TYPE_TOTEM:
 		return WLR_TABLET_TOOL_TYPE_TOTEM;
-#endif
 	}
 	abort(); // unreachable
 }

meson.build

@@ -104,7 +104,7 @@ egl = dependency('egl')
 glesv2 = dependency('glesv2')
 drm = dependency('libdrm', version: '>=2.4.95')
 gbm = dependency('gbm', version: '>=17.1.0')
-libinput = dependency('libinput', version: '>=1.9.0')
+libinput = dependency('libinput', version: '>=1.14.0')
 xkbcommon = dependency('xkbcommon')
 udev = dependency('libudev')
 pixman = dependency('pixman-1')
@@ -133,13 +133,6 @@ wlr_deps = [
 	rt,
 ]
 
-libinput_ver = libinput.version().split('.')
-add_project_arguments([
-	'-DLIBINPUT_MAJOR=' + libinput_ver[0],
-	'-DLIBINPUT_MINOR=' + libinput_ver[1],
-	'-DLIBINPUT_PATCH=' + libinput_ver[2],
-], language: 'c')
-
 subdir('protocol')
 subdir('render')