1 files changed, 1 insertions, 7 deletions
diff --git a/src/runtime/c/pgf/data.h b/src/runtime/c/pgf/data.h
index 6b1dd1780..d75b17f85 100644
--- a/src/runtime/c/pgf/data.h
+++ b/src/runtime/c/pgf/data.h
@@ -108,7 +108,7 @@ struct PgfPGF {
 	PgfFlags* gflags;
 	PgfAbstr abstract;
 	PgfCIdMap* concretes; // |-> PgfConcr*
-	GuPool* pool;
+	GuPool* pool;         // the pool in which the grammar is allocated
 };
 
 typedef struct {
@@ -203,12 +203,6 @@ typedef struct {
 typedef struct {
 } PgfSymbolBIND;
 
-typedef struct {
-	PgfExprProb* (*match)(PgfConcr* concr, PgfSymbol* psym, size_t lin_idx,
-	                      GuString sentence, size_t* poffset,
-	                      GuPool *pool, GuPool *out_pool);
-} PgfLiteralCallback;
-
 typedef GuBuf PgfProductionIdx;
 
 typedef struct {