Revert "SSP-1798"

This reverts commit bee4ea43f457ce51df31dd75608d3a1c8a127a39.
Revert "SSP-1759 - new permission for caseload reassignment"

This reverts commit 077ed569454ae88522795c48393a42471809c353.
Revert "SSP-1739 - allow the tool to be loaded when no student is selected"

This reverts commit 2fa492a2e4e93ac7e8ed9d7410c122fe45866fad.
Revert "SSP-1739 - Caseload Reassignment tool not visible to Manager role by"

This reverts commit e0eb664aa72ea90019e1f1c86e2ee06358b21b14.