Remove sd from isr section
Remove sd from isr section

* Overflows on OMV2

openmv/openmv,iabdalkader/openmv,tianzhihen/openmv,tianzhihen/openmv,kwagyeman/openmv,openmv/openmv,iabdalkader/openmv,kwagyeman/openmv,kwagyeman/openmv,SmartArduino/openmv,tianzhihen/openmv,kwagyeman/openmv,SmartArduino/openmv,openmv/openmv,openmv/openmv,iabdalkader/openmv,SmartArduino/openmv,SmartArduino/openmv,iabdalkader/openmv,tianzhihen/openmv