remove use of MA_RESERVED1 from SunOS module

MA_RESERVED1 never meant anything, and the macro is going away in the
next release of Solaris.  MA_NORESERVE wasn't really mapped to anything
useful, either.  Removing the use of both macros shouldn't make any
material difference, and will be compatible across more versions of
Solaris.

Fixes giampaolo#1002.

psutil/_psutil_sunos.c

@@ -713,9 +713,7 @@ psutil_proc_memory_maps(PyObject *self, PyObject *args) {
         sprintf(perms, "%c%c%c%c%c%c", p->pr_mflags & MA_READ ? 'r' : '-',
                 p->pr_mflags & MA_WRITE ? 'w' : '-',
                 p->pr_mflags & MA_EXEC ? 'x' : '-',
-                p->pr_mflags & MA_SHARED ? 's' : '-',
-                p->pr_mflags & MA_NORESERVE ? 'R' : '-',
-                p->pr_mflags & MA_RESERVED1 ? '*' : ' ');
+                p->pr_mflags & MA_SHARED ? 's' : '-');
 
         // name
         if (strlen(p->pr_mapname) > 0) {