make x86sim refers to a missing script file

[bdelgado1995]

When trying to build x86sim, there is a Makefile reference to downloadSpdmSim.sh which doesn't appear to exist in the github.

~/spdm/fcs_server$ make x86sim
./downloadSpdmSim.sh
make: ./downloadSpdmSim.sh: Command not found
make: *** [Makefile:22: x86sim] Error 127

[antkorczak]

x86sim target is used for Intel's own validation purposes. The components to make it work aren't open sourced as of now. It should be removed from makefile or at least a comment is needed to explain that it shouldn't be used