visualc, remove unused defines GLOBAL_NODE and HAS_SHWIN

configure.ac

@@ -313,7 +313,6 @@ if test "x$with_ngshared" != x  &&  test "x$with_ngshared" != xno ; then
         *mingw* )
             has_shwin=true
             has_no_help=true
-            AC_DEFINE([HAS_SHWIN], [1], [ngspice.dll Windows])
             ;;
         *cygwin* )
             has_shcyg=true

visualc-shared/include/ngspice/config.h

@@ -48,9 +48,6 @@
 /* Define if you want to debug frontend */
 /* #undef FTEDEBUG */
 
-/* Define to enable the .global keyword */
-#define GLOBAL_NODE 1
-
 /* define to specify MS Windows executable */
 // #define HAS_WINGUI 1