Revert "Set charset for responses"

This reverts commit a3e8e8e5db61bb057fe100520d8ad6581f717282.
Revert "Set charset for response content"

This reverts commit e2d9c032e617a3605d9fa5cc2cc5a19340be7d1e.
Revert "Remove unused import"

This reverts commit b0c924e10f707cc176f03ec86af5701f4280f254.
Revert "Set charset on update"

This reverts commit def5aae58b3802044720880edf46bbf5cd3121fb.