Remove the custom migration logic from all runtimes

[ebma]

As part of our efforts to upgrade the dependencies to v0.9.42, we added custom migration logic to all runtimes. Now that these changes are rolled out and all the migrations applied, we can remove that extra logic again.

TODO

• Remove the CustomOnRumtimeUpgrade implementations again
• Remove the customized dependencies. We had to create forks of some projects in order to be able to modify their migration logic. We can delete those forks again and switch back to the 'official'/upstream dependency versions.

[ebma]

@pendulum-chain/product this is more of a chore but nice-to-have and low effort. We can clean up some unnecessary code and repositories with this.

[prayagd]

Hey team! Please add your planning poker estimate with Zenhub @b-yap @bogdanS98 @ebma @gianfra-t @TorstenStueber

[gianfra-t]

I think we can reuse this ticket and remove the custom migration logic after the 1.1.0 upgrade is completed. Otherwise we would need to re-add them soon.

[ebma]

Right, let's do that. I added the ticket as a blocker to the Zenhub dependencies.