version: remove comment about being unused.

version.SHORT is now being used in various places.

Signed-off-by: David Anderson <[email protected]>

version/version.go

@@ -8,4 +8,4 @@
 package version
 
 const LONG = "date.20200410"
-const SHORT = LONG // TODO: unused; remove SHORT? Make it a func?
+const SHORT = LONG