Avoid unnecessary redefinition of atoll() under MSVC 2013
Avoid unnecessary redefinition of atoll() under MSVC 2013

atoll() was added to the MSVC standard library under MSVC 2013
so we don't need our own definition of it.

MD-20088
test: none: Build fix

zhengw1985/Update-Installer,zhengw1985/Update-Installer,zhengw1985/Update-Installer