[VE][Clang][NFC] Disable VE toolchain tests on Windows

VE hardware is unsupported under Windows. Disable the clang VE toolchain
tests here. Tests breaking because of non-POSIX path separators.

GitOrigin-RevId: 3b442644e278b53e351addf349c75b995b10f029
diff --git a/test/Driver/ve-toolchain.c b/test/Driver/ve-toolchain.c
index eb12fdf..fc6a0cf 100644
--- a/test/Driver/ve-toolchain.c
+++ b/test/Driver/ve-toolchain.c
@@ -1,5 +1,6 @@
 /// Check the behavior of toolchain for NEC Aurora VE
 /// REQUIRES: ve-registered-target
+/// UNSUPPORTED: system-windows
 
 ///-----------------------------------------------------------------------------
 /// Checking dwarf-version
diff --git a/test/Driver/ve-toolchain.cpp b/test/Driver/ve-toolchain.cpp
index 6567f96..bb02f7e 100644
--- a/test/Driver/ve-toolchain.cpp
+++ b/test/Driver/ve-toolchain.cpp
@@ -1,5 +1,6 @@
 /// Check the behavior of toolchain for NEC Aurora VE
 /// REQUIRES: ve-registered-target
+/// UNSUPPORTED: system-windows
 
 ///-----------------------------------------------------------------------------
 /// Checking dwarf-version