Remove singleton methods from Stapler class.
Remove singleton methods from Stapler class.

Removed the singleton override methods from the Stapler class since it's
not longer a singleton implmentation.

oschettler/stapler,CodeSleeve/stapler,neerajgoyal12/stapler,InMoji/stapler,sonuku/stapler,AndreasHeiberg/stapler,aozisik/stapler,simudream/stapler,flaxandteal/stapler,riyan8250/stapler