Revert "ReEnabled discard on all EXT4 partitions! (Trimming) some how it's was lost!"

DISCARD is not supported on new EXT4 Drivers, and not needed.

4>EXT4-fs (mmcblk0p12): mounting with "discard" option, but the device does not support discard
6>EXT4-fs (mmcblk0p12): mounted filesystem with writeback data mode. Opts: noauto_da_alloc,journal_async_commit,discard
6>EXT4-fs (mmcblk0p9): recovery complete
4>EXT4-fs (mmcblk0p9): mounting with "discard" option, but the device does not support discard
6>EXT4-fs (mmcblk0p9): mounted filesystem with writeback data mode. Opts: noauto_da_alloc,journal_async_commit,discard

This reverts commit cbfc9f154b8fb04baaddd37d2f47cd171ef379f9.