[15]RFR: 8235995: Remove src/jdk.internal.vm.compiler/.mx.graal directory

[Rahul Raghavan]

Hi,

Please review the following patch to remove
   'src/jdk.internal.vm.compiler/.mx.graal' directory and files,
   reported as added by mistake and is not part of upstream Graal.

<webrev> - http://cr.openjdk.java.net/~rraghavan/8235995/webrev.00/
<JBS> -  https://bugs.openjdk.java.net/browse/JDK-8235995


Thanks,
Rahul