OSX: drop -malign-natural flag for non-clang compilers

Change-Id: I8956ccfd71032909c2f164a8f5b5f9586b6eb285
Reviewed-on: https://gerrit.libreoffice.org/10479Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

solenv/gbuild/platform/macosx.mk

@@ -56,12 +56,10 @@ gb_CXXFLAGS := \
 	-Wno-non-virtual-dtor \
 	-fno-strict-aliasing \
 	-fsigned-char \
-	$(if $(filter TRUE,$(HAVE_CXX11)),$(CXXFLAGS_CXX11)) \
-	$(if $(filter-out TRUE,$(COM_GCC_IS_CLANG)),-malign-natural)
+	$(if $(filter TRUE,$(HAVE_CXX11)),$(CXXFLAGS_CXX11))
 
 	#-Wshadow \ break in compiler headers already
 	#-fsigned-char \ might be removed?
-	#-malign-natural \ might be removed?
 
 # Without this I get struct/class clashes for "complex" when compiling
 # some source files in vcl, at least with the 10.7 SDK.