Revert "clearGCIRanking removes GCIScores instead of GCIStudentRanking."
Revert "clearGCIRanking removes GCIScores instead of GCIStudentRanking."

This reverts commit 6902874defdc62d8ec4906dc4a82166d8faa3b0f.

rhyolight/nupic.son,rhyolight/nupic.son,rhyolight/nupic.son