Revert "build: apply the distcheck tricks used in xf86-input-evdev"

This reverts commit 6eb829e07e.

Althought this feature is desirable, it introduces a dormant bug.

The value of sdkdir during distcheck points to an empty xserver sdkdir
where xserver-properties.h is expected by the tools.

Specifying XORG_CFLAGS for the tools worked around the issue by supplying
the real path to the xserver sdk. tools must not depend on xserver.
In any case it would be a brittle workaround.

--with-xorg-conf-dir='$${sysconfdir}/xorg':
althought this value will work, it brings some confusion as it is
unrelated to the where the configuration files are normally placed,
relative to $prefix which is /usr/share/X11 and not /etc.

This feature can be reintroduced later with the proper solution.

Signed-off-by: Gaetan Nadon <memsize@videotron.ca>

Makefile.am

@@ -18,12 +18,6 @@
 #  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 #  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-# During distcheck, system locations (as provided by pkg-config) are
-# not writable; provide instead relative locations.
-DISTCHECK_CONFIGURE_FLAGS = \
-	--with-sdkdir='$${includedir}/xorg' \
-	--with-xorg-conf-dir='$${sysconfdir}/xorg'
-
 MAINTAINERCLEANFILES = ChangeLog INSTALL
 
 pkgconfigdir = $(libdir)/pkgconfig