[STATIC_CRT_APITEST] Remove static_crt_apitest from build for now
The test used the obsolete CRT. The test doesn't provide much value anyway, because we test all the used code already through msvcrt_apitest, ntdll_apitest, etc. The only real benefit was testing and working outside of reactos.
I kept the build file around, which could be revived with msvcrt_static or libcntpr, but that needs some work.