Revert "Próby zbudowania z mmc_avr.c"

This reverts commit 274d40ab0b9d7f4f2c96bee1ff2942baa36c780e.
Revert "--- sdmm.c, +++ mmc_avr.c"

This reverts commit a04969f78b1ea0135e216bf7a536bdfc06a09343.