Remove remaining mentions of UNSAFE_STAT_OK

The last use was removed by bed9075.

Discussion: https://www.postgresql.org/message-id/flat/01229f9a-b358-d71e-31ae-4c0855d73cbc%40enterprisedb.com

Author: petere

src/interfaces/libpq/Makefile

@@ -22,7 +22,7 @@ NAME= pq
 SO_MAJOR_VERSION= 5
 SO_MINOR_VERSION= $(MAJORVERSION)
 
-override CPPFLAGS :=  -DFRONTEND -DUNSAFE_STAT_OK -I$(srcdir) $(CPPFLAGS) -I$(top_builddir)/src/port -I$(top_srcdir)/src/port
+override CPPFLAGS :=  -DFRONTEND -I$(srcdir) $(CPPFLAGS) -I$(top_builddir)/src/port -I$(top_srcdir)/src/port
 ifneq ($(PORTNAME), win32)
 override CFLAGS += $(PTHREAD_CFLAGS)
 endif

src/tools/msvc/Mkvcbuild.pm

@@ -266,7 +266,6 @@ sub mkvcbuild
 	$libpq = $solution->AddProject('libpq', 'dll', 'interfaces',
 		'src/interfaces/libpq');
 	$libpq->AddDefine('FRONTEND');
-	$libpq->AddDefine('UNSAFE_STAT_OK');
 	$libpq->AddIncludeDir('src/port');
 	$libpq->AddLibrary('secur32.lib');
 	$libpq->AddLibrary('ws2_32.lib');