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 commitd75e28477a. Revert "[flang][runtime] Replace recursion with iterative work queue (#137727)" This reverts commit163c67ad3d.