Removing pragma for 4127 (to see what is still broken with the latest code).

Author: rwgk

include/pybind11/pybind11.h

@@ -10,10 +10,7 @@
 
 #pragma once
 
-#if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
-#  pragma warning(push)
-#  pragma warning(disable: 4127) // warning C4127: Conditional expression is constant
-#elif defined(__GNUG__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
+#if defined(__GNUG__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
 #  pragma GCC diagnostic push
 #  pragma GCC diagnostic ignored "-Wunused-but-set-parameter"
 #  pragma GCC diagnostic ignored "-Wattributes"
@@ -2388,8 +2385,6 @@ PYBIND11_NAMESPACE_END(PYBIND11_NAMESPACE)
 #    pragma GCC diagnostic pop // -Wnoexcept-type
 #endif
 
-#if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
-#  pragma warning(pop)
-#elif defined(__GNUG__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
+#if defined(__GNUG__) && !defined(__clang__) && !defined(__INTEL_COMPILER)
 #  pragma GCC diagnostic pop
 #endif