It's been unused for nearly 9 years. By the end of the series stdvga.c's
sole purpose will be to make sure VRAM writes use the bufio ioreq path.
1: drop stdvga's "cache" struct member
2: drop stdvga's "stdvga" struct member
3: remove unused MMIO handling code
4: drop stdvga's "gr[]" struct member
5: drop stdvga's "sr[]" struct member
6: drop stdvga's "{g,s}r_index" struct members
7: drop stdvga's "vram_page[]" struct member
Of course all of these could be folded into a single patch, but I think
going piecemeal makes more clear that the individual parts are indeed
unused.
Jan
