[SYCL] Return some Windows symbols in library back#4244

bader merged 2 commits intointel:syclintel/llvm:syclfrom

dm-vodopyanov:private/dvodopya/return-unnecessary-export-symbols-for-windm-vodopyanov/llvm:private/dvodopya/return-unnecessary-export-symbols-for-winCopy head branch name to clipboard