This reverts commitfb05fddd7d. After1554b5cb61("Update seastar submodule"), which fixed a coroutine bug in Seastar, it is no longer necessary. Also revert the related "build: drop the warning on -O0 might fail tests" (894039d444).
This reverts commitfb05fddd7d. After1554b5cb61("Update seastar submodule"), which fixed a coroutine bug in Seastar, it is no longer necessary. Also revert the related "build: drop the warning on -O0 might fail tests" (894039d444).