Revert "msm: mdss: support mdp prefill bandwith for multiple platforms"

This reverts commit 4fce59eeb1223502f6d7b32e42e4c43f582cab0f.
Revert "msm: mdss: add mdp overlap and prefill bandwidth calculations"

This reverts commit 8ebcc287f915f0dad1b030be0ee228ed227fe703.
Revert "msm: mdss: refactor performance calculations"

This reverts commit 835f78e853356c2e61188eaf4cb7d4bddb6ca5a5.