variant/common: Don't install extra devel deps for QEMU
variant/common: Don't install extra devel deps for QEMU

This is to ensure that we do not install any additional development
packages for QEMU, which are not available on other platforms.

Signed-off-by: Jonatan Pålsson <1cf7614674bc247f2fb1984805465e19f2785270@luxoft.com>

Pelagicore/meta-pelux,GordanM/meta-pelux,GordanM/meta-pelux,Pelagicore/meta-pelux,Pelagicore/meta-pelux