clang: Remove unnecessary host-supports-cuda from test (#171174)

Author: arsenm

clang/lib/Headers/__clang_cuda_runtime_wrapper.h

@@ -38,6 +38,7 @@
 
 // Include some standard headers to avoid CUDA headers including them
 // while some required macros (like __THROW) are in a weird state.
+#include <climits>
 #include <cmath>
 #include <cstdlib>
 #include <stdlib.h>

clang/test/Headers/cuda_with_openmp.cu

@@ -2,7 +2,8 @@
 // Reported in https://bugs.llvm.org/show_bug.cgi?id=48014
 ///==========================================================================///
 
-// REQUIRES: nvptx-registered-target, host-supports-cuda
+// REQUIRES: nvptx-registered-target
 
-// RUN: %clang -x cuda -fopenmp -c %s -o - --cuda-path=%S/../Driver/Inputs/CUDA/usr/local/cuda -nocudalib -isystem %S/Inputs/include -isystem %S/../../lib/Headers -fsyntax-only
+// RUN: %if x86-registered-target %{ %clang -target x86_64-unknown-linux -x cuda -fopenmp -c %s -o - --cuda-path=%S/../Driver/Inputs/CUDA/usr/local/cuda -nocudalib -isystem %S/Inputs/include -isystem %S/../../lib/Headers -fsyntax-only %}
+// RUN: %if systemz-registered-target %{ %clang -target s390x-ibm-zos -x cuda -fopenmp -c %s -o - --cuda-path=%S/../Driver/Inputs/CUDA/usr/local/cuda -nocudalib -isystem %S/Inputs/include -isystem %S/../../lib/Headers -fsyntax-only %}