Drop global -D_HAS_AUTO_PTR_ETC from Windows build

...which had been added with 61c88ae6945c241f5f2aeb844eeca0776b487132 "gbuild:
always compile as C++17 with MSVC 2017" but appears to be unnecessary now that
becbabbb785545af6a1799f5ecd445785534d478 "external/clucene: Remove unnecessary
uses of obsolete std::binary_function" removed code that relied on it.
(There are still a few targeted defines of _HAS_AUTO_PTR_ETC sprinkled across
the code where necessary.)

Change-Id: Id57d24a0e01272864df36cd2ed1cb31c59c30d7b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/124903
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
diff --git a/solenv/gbuild/platform/com_MSC_defs.mk b/solenv/gbuild/platform/com_MSC_defs.mk
index e191228..39c284a 100644
--- a/solenv/gbuild/platform/com_MSC_defs.mk
+++ b/solenv/gbuild/platform/com_MSC_defs.mk
@@ -46,7 +46,6 @@ gb_COMPILERDEFS := \
	-DBOOST_ERROR_CODE_HEADER_ONLY \
	-DBOOST_OPTIONAL_USE_OLD_DEFINITION_OF_NONE \
	-DBOOST_SYSTEM_NO_DEPRECATED \
	-D_HAS_AUTO_PTR_ETC \
	-D_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING \
	-D_SILENCE_CXX17_OLD_ALLOCATOR_MEMBERS_DEPRECATION_WARNING \
	-D_SILENCE_CXX17_RESULT_OF_DEPRECATION_WARNING \