Revert IBuildEngine.ProjectFileOfTaskNode use.#201

jonpryor merged 1 commit intodotnet:maindotnet/android-tools:mainfrom

jonpryor:jonp-revert-IBuildEngine.ProjectFileOfTaskNode-usejonpryor/xamarin-android-tools:jonp-revert-IBuildEngine.ProjectFileOfTaskNode-useCopy head branch name to clipboard