Remove RefTimeWeight (#12157)

* update api

* update

* remove unused

* remove `one` api

* fix unused

* fmt

* add saturating accrue

* remove `Weight::new()`

* use some macros

* div makes no sense

* Update weight_v2.rs

* missed some

* more patch

* fixes

* more fixes

* more fix

* more fix

* remove RefTimeWeight

* Update frame/contracts/src/storage.rs

Co-authored-by: Alexander Theißen <alex.theissen@me.com>

* not needed

* Fixes

Co-authored-by: Alexander Theißen <alex.theissen@me.com>
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>