reverted ppc qemu and scanbuild on trusty
reverted ppc qemu and scanbuild on trusty

ppc cross-compilation seems broken outside of trusty
scan-build version changes with distrib version, resulting in a different list of false positives

Cyan4973/zstd,Cyan4973/zstd,Cyan4973/zstd,Cyan4973/zstd,Cyan4973/zstd