Removed no_buffers check completely from common.cc

There's not a single instance of using info.bufmem in any other source
file aside from linux.cc. If there was any plan to use this check (and
info.bufmem) with any other source file, the check should be made in
that specific source file instead.

src/common.cc

@@ -293,14 +293,6 @@ void update_stuff() {
 
   /* if you registered a callback with conky::register_cb, this will run it */
   conky::run_all_callbacks();
-
-#if !defined(__linux__)
-  /* XXX: move the following into the update_meminfo() functions? */
-  if (no_buffers.get(*state)) {
-    info.mem -= info.bufmem;
-    info.memeasyfree += info.bufmem;
-  }
-#endif
 }
 
 /* Ohkie to return negative values for temperatures */