remove obsolete workaround for CDRIVER-5732

Author: Micah Scott

examples/api/bsoncxx/examples/bson_errors/big_string.hh

@@ -27,8 +27,7 @@ namespace examples {
 // Used to trigger builder append failure.
 struct big_string {
     // BSON_SIZE_MAX == 0x7FFFFFFF
-    // Leave some room for CDRIVER-5732.
-    std::size_t length{static_cast<std::size_t>(std::numeric_limits<std::int32_t>::max() - 32u)};
+    std::size_t length{static_cast<std::size_t>(std::numeric_limits<std::int32_t>::max())};
 
     // Allocate an UNINITIALIZED blob of data that will not be accessed due to length checks.
     // Leaving memory unitialized (rather than zero-init) should hopefully avoid slow and expensive