sw:vec_iree: fix ukernel breakage

Fix ukernel breakage due to upstream change
https://github.com/iree-org/iree/pull/11987.

Change-Id: Ife0de110e181a38c81bc47e655fd6eaa7b774837

vmvx_ukernel/elementwise_impl.c.inc

diff --git a/vmvx_ukernel/elementwise_impl.c.inc b/vmvx_ukernel/elementwise_impl.c.inc
index baf1efb..4de26b0 100644
--- a/vmvx_ukernel/elementwise_impl.c.inc
+++ b/vmvx_ukernel/elementwise_impl.c.inc
@@ -73,24 +73,6 @@
 #define ASSI32(ptr) *((iree_uk_int32_t*)ptr)
 
 //===----------------------------------------------------------------------===//
-// Math helper functions (extracted from base/internal/math.h and adapted
-// to be able to be used standalone).
-//===----------------------------------------------------------------------===//
-static inline int iree_uk_count_leading_zeros_u32(const iree_uk_uint32_t n) {
-#if defined(__GNUC__) || defined(__clang__)
-  // Handle 0 as a special case because __builtin_clz(0) is undefined.
-  if (n == 0) return 32;
-  // Use __builtin_clz, which uses the following instructions:
-  //  x86: bsr
-  //  ARM64: clz
-  //  PPC: cntlzd
-  return (int)__builtin_clz(n);
-#else
-#error No clz for this arch.
-#endif  // GCC / CLANG
-}
-
-//===----------------------------------------------------------------------===//
 // Implementation macros.
 //===----------------------------------------------------------------------===//