Revert runtime work queue patch, it breaks some tests that need investigation (#143713)
Revert "[flang][runtime] Another try to fix build failure"
This reverts commit 13869cac2b5051e453aa96ad71220d9d33404620.
Revert "[flang][runtime] Fix build bot flang-runtime-cuda-gcc errors
(#143650)"
This reverts commit d75e28477af0baa063a4d4cc7b3cf657cfadd758.
Revert "[flang][runtime] Replace recursion with iterative work queue
(#137727)"
This reverts commit 163c67ad3d1bf7af6590930d8f18700d65ad4564.