test: enable debug testing

cl/compile.go

@@ -57,15 +57,10 @@ func SetDebug(dbgFlags dbgFlags) {
 	debugGoSSA = (dbgFlags & DbgFlagGoSSA) != 0
 }
 
-// EnableDebugSymbols enables debug symbols.
 func EnableDebugSymbols(b bool) {
 	debugSymbols = b
 }
 
-func DebugSymbols() bool {
-	return debugSymbols
-}
-
 // -----------------------------------------------------------------------------
 
 type instrOrValue interface {