Revert "[libc] Better IntegerToString API"

This reverts commit 910cc05aae85a6b31e2a2ed87d3dd46db46fce04.

1 files changed, 3 insertions, 2 deletions

diff --git a/libc/test/UnitTest/LibcTest.cpp b/libc/test/UnitTest/LibcTest.cpp
index d9a9e50ca9a6..3ffd0c3d18ab 100644
--- a/libc/test/UnitTest/LibcTest.cpp
+++ b/libc/test/UnitTest/LibcTest.cpp
@@ -47,8 +47,9 @@ cpp::enable_if_t<cpp::is_integral_v<T> && (sizeof(T) > sizeof(uint64_t)),
                  cpp::string>
 describeValue(T Value) {
   static_assert(sizeof(T) % 8 == 0, "Unsupported size of UInt");
-  const IntegerToString<T, radix::Hex::WithPrefix> buffer(Value);
-  return buffer.view();
+  char buf[IntegerToString::hex_bufsize<T>()];
+  IntegerToString::hex(Value, buf, false);
+  return "0x" + cpp::string(buf, sizeof(buf));
 }
 
 // When the value is of a standard integral type, just display it as normal.