remove some more unused clocks and resets in imageon example
remove some more unused clocks and resets in imageon example

csail-csg/connectal,csail-csg/connectal,cambridgehackers/connectal,chenm001/connectal,chenm001/connectal,8l/connectal,chenm001/connectal,csail-csg/connectal,csail-csg/connectal,chenm001/connectal,hanw/connectal,8l/connectal,chenm001/connectal,cambridgehackers/connectal,8l/connectal,cambridgehackers/connectal,hanw/connectal,hanw/connectal,csail-csg/connectal,8l/connectal,cambridgehackers/connectal,cambridgehackers/connectal,hanw/connectal,hanw/connectal,8l/connectal