make splice deleteCount required in es5.d.ts - #32643

make splice deleteCount required in es5.d.ts#32643

Nathan Shively-Sanders (sandersn) merged 3 commits into

microsoft:mastermicrosoft/TypeScript:masterfrom

tjenkinson:es5-splice-delete-counttjenkinson/TypeScript:es5-splice-delete-countCopy head branch name to clipboard