[OpenJDK 2D-Dev] RFR: 8210863: Remove Xrandr include files from JDK sources

[Phil Race]

Bug: https://bugs.openjdk.java.net/browse/JDK-8210863
Webrev: http://cr.openjdk.java.net/~prr/8210863/

JDK imported Xrandr headers into it's source a really long time ago because
old build systems did not have it. We no longer have that problem, so we can
remove these.

I am not changing the code to remove the dynamic loading of the 
functions and
change it to compile time link against them.
We can probably do that too at a later time,  but the immediate goal is to
remove these source files since they are imported 3rd party sources.

-phil.