Revert "Add rpc support for partitioned rewards (#34773)"

[CriesofCarrots]

This reverts commit 22500c2.

Problem

We decided to abandon solana-foundation/solana-improvement-documents#106
This changeset will need to be recreated on top of the block metadata solution, but for now, reverting so we can pull out the PDA code

Summary of Changes

First revert. Approve this one if you want to go commit-by-commit.

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.

[codecov]

Codecov Report

Attention: 51 lines in your changes are missing coverage. Please review.

Comparison is base (5dd9609) 81.6% compared to head (31aebca) 81.6%.
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #35056   +/-   ##
=======================================
  Coverage    81.6%    81.6%           
=======================================
  Files         830      830           
  Lines      224951   224862   -89     
=======================================
- Hits       183626   183592   -34     
+ Misses      41325    41270   -55     

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.