linux-tools.inc was removed. More info:
commit b485f3e0e55ad62079ed0913970ff0620f4808ea
Author: Bruce Ashfield <bruce.ashfield@windriver.com>
recipes-kernel: remove linux-tools.inc
perf has been moved to a standalone package, making linux-tools.inc
unecessary. It can now be removed and recipes that included it
updated.
Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>