Remove the stale header and source files that were a part of the virtual machine.

[itssamuelrowe]

Initially, the virtual machine and the compiler were part of the same repository. However, for maintainance purposes, the virtual machine was separated and moved to its own repository. The compiler, in particular the code generator, depends on structures and enumerations that are part of the virtual machine. As of now, there are two copies of these entities, one in the compiler repository and the other in the virtual machine repository. The files in the compilers repository are not updated anymore. Therefore, these "stale" header files (and possibly source files) should be removed. After which, building the compiler would require the header files of the virtual machine to be installed on the system.