VESA is supported only by the legacy sc(4) console driver, not vt(4). As reported on the freebsd-hackers list having VESA compiled into
the kernel or loaded as a module can cause issues with suspend/resume when the nvidia driver is in use.
Since VESA currently serves no purpose with vt(4), remove it from GENERIC and allow sc(4) users who need it to load it as a module. (It may still be worth adding VESA support to vt(4); we can revisit this change if that occurs.)