Don't include (mission)pak_checksums in standalone build

Avoids a compiler warning

code/qcommon/files.c

@@ -174,6 +174,7 @@ or configs will never get loaded from disk!
 
 // every time a new demo pk3 file is built, this checksum must be updated.
 // the easiest way to get it is to just run the game and see what it spits out
+#ifndef STANDALONE
 #define	DEMO_PAK0_CHECKSUM	2985612116u
 static const unsigned int pak_checksums[] = {
 	1566731103u,
@@ -194,6 +195,7 @@ static const unsigned int missionpak_checksums[] =
 	2662638993u,
 	1438664554u
 };
+#endif
 
 // if this is defined, the executable positively won't work with any paks other
 // than the demo pak, even if productid is present.  This is only used for our