examples/foods: remove all -path flags

All languages n the Foods grammar compile fine with alltenses.

examples/foods/FoodsFre.gf

@@ -1,4 +1,3 @@
---# -path=.:../foods:present
 
 concrete FoodsFre of Foods = open SyntaxFre, ParadigmsFre in {
 
@@ -29,4 +28,4 @@ concrete FoodsFre of Foods = open SyntaxFre, ParadigmsFre in {
 		Expensive = mkAP (mkA "cher") ;
 		Delicious = mkAP (mkA "délicieux") ;
 		Boring = mkAP (mkA "ennuyeux") ;
-	}
+	}