Remove superfluous C++ linkage specification from cassert header

Author: lbushi25

sycl/include/sycl/stl_wrappers/cassert

@@ -16,7 +16,6 @@
 #include <../include/cassert>
 #endif
 
-extern "C++" {
 #ifdef __SYCL_DEVICE_ONLY__
 #include <CL/__spirv/spirv_vars.hpp>
 
@@ -43,4 +42,3 @@ __devicelib_assert_fail(const char *, const char *, int32_t, const char *,
 #endif
 #endif
 #endif
-}