Revert "msm_serial_hs: Use RFR GPIO to communicate remote uart"

This reverts commit d451d0f3eda1885e21823dbe9a97b9ff9eddc9d3.
Revert "msm_serial_hs: Fixing issue during UART shutdown"

This reverts commit 591fbc3833bb217385c9ac2e1712b9a1ae10273e.
Revert "msm_serial_hs: Improve UART Shutdown path"

This reverts commit b77e072fe55c0482d755b3e50749bd2dba360b17.