[SYCL][E2E] Update sub_group_as*.cpp includes (#20299)

Remove redundant includes.

Author: KornevNikita

sycl/test-e2e/SubGroup/sub_group_as.cpp

@@ -8,10 +8,6 @@
 // XFAIL: spirv-backend && gpu
 // XFAIL-TRACKER: CMPLRLLVM-64705
 
-#include <cassert>
-#include <cstdint>
-#include <cstdio>
-#include <cstdlib>
 #include <sycl/detail/core.hpp>
 #include <sycl/sub_group.hpp>
 

sycl/test-e2e/SubGroup/sub_group_as_vec.cpp

@@ -9,10 +9,6 @@
 // XFAIL-TRACKER: CMPLRLLVM-64705
 
 #include "helper.hpp"
-#include <cassert>
-#include <cstdint>
-#include <cstdio>
-#include <cstdlib>
 
 int main(int argc, char *argv[]) {
   sycl::queue queue;