native_types: Fix pendantic error

Trailing semicolons for function declarations are superfluous.

Change-Id: Ifbf8806b135deccb558bc478b1e6746c9beb9a60
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/include/sdbusplus/message/native_types.hpp b/include/sdbusplus/message/native_types.hpp
index 3aa6dd5..d3ef8dc 100644
--- a/include/sdbusplus/message/native_types.hpp
+++ b/include/sdbusplus/message/native_types.hpp
@@ -206,7 +206,7 @@
 auto convert_from_string(const std::string& str) noexcept
 {
     return details::convert_from_string<T>::op(str);
-};
+}
 
 /** @brief Convert from a native type to a string.
  *