[Clas_cascades] SC_occupancy recheck

[Zhiwen Zhao]

Dear collaborators,

I rechecked the SC_occupancy with higher statistics.
And thus update the SC paddles with low efficiencies which need to be cut out in 
the analysis code.
http://clasweb.jlab.org/rungroups/eg3/wiki/index.php/Sc_occupancy

Zhiwen