Revert "block: limit default readahead size for small devices"

This reverts commit 141ae1ac4a997c96db4db341b442f8607d334432.
Revert "60hz panel"

This reverts commit 5fa5fbe71c93e4f58e00023a47e56037497e93e8.
Revert "Bump to 1000 hz"

This reverts commit 7b357ab430ff5faf97904334d4405e0b355dd395.
Revert "Revert "block: limit default readahead size for small devices""

This reverts commit a2b26127060158448b66bba2d7e697560188b9c5.