build: Fixes mainDexClasses.bat

This commit fixes the parameters passed to MainDexListBuilder when the annotation workaround switch is not used. To test this, run a build on Windows that invokes the mainDexClasses.bat script for building the list of the classes for the main dex file.

Test: run a build of any Android app on Windows, and make sure the build invokes the build invokes the mainDexClasses.bat script without the annotation workaround switch.
Change-Id: Ifb0efc7d23773b16a4cb1b2c37bf99b8d0827881